USA (449 unique benefit summaries found)

Through use of the Roll Stability Control (RSC) systems, it was estimated that between 1,422 and 2,037 combination vehicle rollover crashes in curves could be prevented, resulting in effectiveness rates of 37 percent and 53 percent, respectively.(February 2009)

An analysis of benefits and costs of Roll Stability Control (RSC) Systems for the trucking industry found benefits per dollar spent values of $1.66 to $5.34 with varying estimates of efficiency and annual VMT.(February 2009)

Integrated Corridor Management (ICM) strategies that promote integration among freeways, arterials, and transit systems can help balance traffic flow and enhance corridor performance; simulation models indicate benefit-to-cost ratios for combined strategies range from 7:1 to 25:1.(2009)

In Washington DC an ITS work zone program implemented on I-295 decreased delay up to 90 percent with an average decrease in delay of 52 percent when drivers were advised to take alternate routes.(October 2008)

In Kalamazoo Michigan, the activation of the Dynamic Lane Merge System in a work zone reduced the number of forced merges seven fold and reduced the number of dangerous merges three fold.(October 2008)

In Little Rock Arkansas, 82 percent of the drivers surveyed agreed that the Automated Work Zone Information System improved their ability to react to slow or stopped traffic.(October 2008)

In Texas, during major incidents or high construction impact periods, the work zone traffic management system diverted an average of 10 percent of mainline traffic to alternate routes, with the highest diversion of traffic at 28 percent.(October 2008)

In Espanola, New Mexico the implementation of a traffic management system on NM 68 provided a decrease in total crashes of 27.5 percent and a reduction in vehicle delay of 87.5 percent.(September 2, 2008)

The Columbus Electronic Freight Management system improved data accuracy by eliminating manual data entry from multiple partners and reduced the number of trips to verify data, the efforts to correct data, and the labor related to obtaining information about priority shipments. (June 2008)

The Columbus Electronic Freight Management system improved timeliness of the freight release process and supply chain data, and enhanced cargo visibility.(June 2008)

The Columbus Electronic Freight Management system reduced total transit time of an air-freight supply chain from 96 hours to 82 hours (14 percent) and saved $5.94 per shipment in labor costs across the entire supply chain by reducing paper work.(June 2008)

In the City of Fort Collins, Colorado, the installation of an Advanced Traffic Management System reduced travel times up to 36 percent.(24 June 2008)

In Chattanooga, Tennessee, fixed-route scheduling software improved operations by saving approximately 60 hours per week in operator labor, resulting in a savings of approximately $62,000 per year.(10 June 2008)

Increasing integration between AVL systems, components, and interfaces has improved the ability of transit agencies to collect data on location and schedule adherence; support operational control, service restoration, and planning activities.(2008)

Electronic credentialing allowed trucks to be placed into service an average of 3.5 days sooner than paper-based systems.(2 October 2007)

Electronic screening produced operating cost savings per bypass of $8.68 for interstate motor carriers.(2 October 2007)

The Bay Area Rapid Transit (BART) smart parking system field test increased BART trips and resulted in an average of 9.7 fewer vehicle miles traveled and decreased the average commute time by 2.6 minutes.(1 August 2007)

In Snohomish County, Washington State, implementation of a transit signal priority system on two test corridors reduced average transit corridor travel time by 4.9 percent, and had insignificant negative impacts on local cross street traffic.(15 June 2007)

An evaluation of scheduling software for the paratransit service in Billings, Montana found that the break-even point for savings as a result of the software implementation was a three percent improvement in efficiency.(May 2, 2007)

Approximately 50 percent of Commercial Vehicle Information Systems and Networks (CVISN) managers surveyed indicated that CVISN electronic credentialing systems can save staff time and labor, allowing additional support to be assigned to more critical agency functions. (28 February 2007)

In Salt Lake City, Utah, staff meteorologists stationed at a TOC provided detailed weather forecast data to winter maintenance personnel, reducing costs for snow and ice control activities, and yielding a benefit-to-cost ratio of 10:1.(February 2007)

In 2006, improvements to Florida's SMART SunGuide Website increased hits to 16,778,000 from 115,000 hits recorded in 2005.(January 2007)

In Broward County, Florida, the 2006 analysis for the SMART SunGuide TMC roadway and incident clearance times showed reductions of 18 percent and 4 percent respectively over 2005.(January 2007)

In Florida, the addition of Open Road Tolling (ORT) to an existing Electronic Toll Collection (ETC) mainline toll plaza decreased delay by 50 percent for manual cash customers and by 55 percent for automatic coin machine customers, and increased speed by 57 percent in the express lanes.(21-25 January 2007)

Evaluation data show that forward collision warning systems (CWS) alone, and CWS bundled with adaptive cruise control (ACC) and advanced braking systems (AdvBS) can improve safety for commercial vehicles.(21-25 January 2007 )

In Florida, the addition of Open Road Tolling (ORT) to an existing Electronic Toll Collection (ETC) mainline toll plaza decreased crashes by an estimated 22 to 26 percent.(21-25 January 2007)

In Hampton Roads, Virginia, a hurricane evacuation plan indicated that lane reversal is warranted for any hurricane predicted to make landfall as a Category 4 or 5 storm, and is strongly recommended for any Category 3 storm.(21-25 January 2007)

The initial costs for collision warning systems (CWS) can be high making it difficult for fleets that experience few crashes to deploy cost-effective solutions.(1/5/2007)

Trucks equipped with collision warning systems, adaptive cruise control, and advanced braking systems have the potential to reduce truck-initiated rear-end crashes by up to 28 percent.(1/5/2007)

Approximately 80 percent of the truck drivers surveyed indicated that collision warning systems made them more vigilant, helped them maintain a safer following distance, and increased their reaction time and awareness.(1/5/2007)

Bus rapid transit (BRT) can reduce transit running times by 38 to 69 percent, increase ridership by 35 to 77 percent, and improve service reliability.(2007)

Implementing Transit Signal Priority (TSP) can improve bus running times by 2 to 18 percent.(2007)

In St. Paul, Minnesota, an advanced parking management system reduced travel times by nine percent.(January 2007)

At the Baltimore/Washington International (BWI) airport, 81 percent of surveyed travelers agreed that the advanced parking management system made parking easier compared to other airports.(January 2007)

Experience with the Omnilink system in Prince William County, Virginia suggests that with less than 20 passengers per hour, adding 10 minutes of slack time allows accommodation of one or two deviations per hour for routes taking approximately 35 minutes to drive without deviations.(January 2007)

Outside San Francisco, a transit-based smart parking system contributed to an increase in transit mode share, a decrease in commute time and a reduction in total VMT.(December 2006. )

In Oregon and Colorado, downhill speed warning systems decreased truck crashes up to 13 percent at problem sites.(31 October 2006)

At a tunnel in Pennsylvania, an overheight/overwidth warning system improved safety; occasional crashes demonstrate value of system and importance of maintenance.(31 October 2006)

In Monroe County, New York, the closed-circuit television (CCTV) camera provided traffic operators the availability of visual information so they can examine real time incident conditions and provide a higher and more responsive quality of service to the traveling public.(August 2006)

In Georgia, the NaviGAtor incident management program reduced the average incident duration from 67 minutes to 21 minutes, saving 7.25 million vehicle-hours of delay over one year. (August 2006)

In Monroe County, New York, the Camera Deployment and Intelligent Transportation Systems (ITS) Integration project reduced incident validation times by 50 to 80 percent saving between 5 and 12 minutes per incident.(August 2006)

In Georgia, the HERO motorist assistance patrol program and NaviGAtor incident management activities saved more than 187 million dollars yielding a benefit-to-cost ratio of 4.4:1.(August 2006)

In Georgia, the Navigator incident management program reduced secondary crashes from an expected 676 to 210 in the twelve months ending April 2004.(August 2006)

In Georgia, the NaviGAtor incident management program reduced annual fuel consumption by 6.83 million gallons, and contributed to decreased emissions: 2,457 tons less Carbon monoxide, 186 tons less hydrocarbons, and 262 tons less Nitrous oxides.(August 2006)

In Atlanta, satisfaction with motorist assistance patrols ranged from 93 to greater than 95 percent in two separate surveys of drivers who were already aware of the service.(August 2006)

Freeway Service Patrol: "About FSP", and "Facts at a Glance" (Web Site)(22 June 2006)

While both cars and sport utility vehicles (SUVs) benefit from electronic stability control (ESC) systems, evaluation data suggest that the reduction in the risk of single-vehicle crashes was significantly greater for SUVs (49 percent) than for cars (33 percent). (13 June 2006. )

In Myrtle Creek, Oregon, an advanced curve speed warning system installed on I-5 reduced the speed of 76 percent of drivers surveyed.(June 2006)

In Kentucky, 94 percent of travelers surveyed said they were satisfied with the information provided by 511 Tourism Service operators. (May 2006)

Transit operators and dispatchers for the South Lake Tahoe Coordinated Transit System (CTS) are generally satisfied with the new system deployed and feel that it can provide good capabilities for future service expansion.(4/14/2006)

At the Breezewood Interchange on the Pennsylvania Turnpike, installation of a truck rollover warning system immediately reduced the occurrence of truck rollover crashes.(April 2006)

An integrated system of forward collision warning and adaptive cruise control functions was projected to prevent about 10 percent of all rear-end crashes, and 10 to 20 percent of severe near-crashes.(April 2006)

In Idaho, 80 percent of motorist surveyed who used Road-Weather Integrated Data System information as a traveler information resource indicated that the information they received made them better prepared for adverse weather.(2/2/2006)

In Oregon, approximately 90 percent of motorists surveyed indicated that they would slow down in response to messages displayed by an automated high wind warning system.(February 2006)

In Oregon, the benefit-to-cost ratios for two automated wind warning systems were 4.13:1 and 22.80:1.(February 2006)

In Minneapolis, Minnesota, survey data collected prior to the deployment of MnPASS Express Lanes (HOT lanes) on I-394 examined travelers' willingness-to-pay to avoid congestion. (22-26 January 2006)

Two surveys asked motor carriers what the motivation was for safety technology installation. A clear majority of the respondents indicated that crash reduction (68%) and lower insurance rates (52%) were key benefits.(22-26 January 2006)

Survey responses from key professionals in five states indicate the following ITS technologies have the highest potential to benefit emergency transportation operations: interoperable radio communications, dynamic message signs, GPS and geographical information systems, closed circuit television roadway surveillance, and Enhanced 911.(22-26 January 2006)

Initial research suggests that most drivers will respond to intersection collision warning systems and slow or stop appropriately.(22-26 January 2006)

An automated work zone information system deployed on a California interstate greatly reduced traffic demand through the work zone resulting in a maximum average peak delay that was 50 percent lower than expected.(22-26 January 2006)

Researchers estimated there are about 0.17 billion air cargo shipments each year in the United States that could benefit from Electronic Supply Chain Manifest (ESCM). With potential cost saving benefits ranging from $11.77 to $16.20 per air-freight shipment, ESCM could save the freight industry more than $2 billion per year.(14 December 2005)

In Florida, the Road Ranger Service Patrol program saved over 1.7 million gallons of fuel by eliminating over one million vehicle-hours of delay in 2004.(November 2005)

HELP Annual Operating Report, July 1, 2004 - June 30, 2005(October 2005)

The Texas Traffic Light Synchronization Program reduced delay by 23 percent by updating traffic signal control equipment and optimizing signal timing on a previously coordinated arterial.(October 2005)

An evaluation of the Arizona 511 telephone traveler information system found that more than 70 percent of users surveyed were satisfied with the enhanced content provided.(30 September 2005)

Customer satisfaction with 511 ranged from 68 to 92 percent in four deployments studied. (September 2005)

In Denver, Colorado, anti-icing on interstate freeways reduced snow and ice related crashes by 14 percent.(19 August 2005.)

Evaluation data show that anti-icing and pre-wetting strategies can reduce sanding applications by 20 to 30 percent, decrease chemical applications by 10 percent, and reduce chloride and sediment runoff in local waterways.(19 August 2005.)

Evaluation data show that anti-icing programs can cut snow and ice control costs in half.(19 August 2005.)

The Traffic Light Synchronization program in Texas demonstrated a benefit-to-cost ratio of 62:1(7-10 August 2005)

The Texas Traffic Light Synchronization program reduced delays by 24.6 percent by updating traffic signal control equipment and optimizing signal timing.(7-10 August 2005)

Widespread deployment of integrated countermeasure systems could prevent over 48 percent of rear-end, run-off-road, and lane change crashes.(August 2005)

In Virginia, ADMS stakeholders (i.e., VDOT administrators, planners, and researchers) were pleased with the ability of the system to provide a variety of data, but wanted more information on traffic counts, turning movements, and work zones, as well as broader coverage.(August 2005)

In California, public support for variable tolling on SR91 was initially low, but after 18 months of operations; nearly 75 percent of the commuting public expressed approval of virtually all aspects of the Express Lanes program.(June 2005)

Evaluation data collected from the Freight Information Real-time System (FIRST) for Transport project estimated that savings per drayage trip to an ocean terminal would range from $21.36 to $247.57.(June 2005)

In Arizona, red light cameras reduced the occurrence of severe right-angle and left-turn crashes while the number of rear-end crashes increased.(June 2005)

In North Carolina, work zone construction staff observed a dramatic reduction in queue frequency and length when using a smart work zone traveler information system.(May 2005)

In North Carolina, a work zone equipped with smart work zone traveler information systems observed fewer crashes compared to other work zones without the technology.(May 2005)

In Houston, a survey of motorists found that 85 percent of respondents changed their route after viewing real-time travel time information on freeway dynamic message signs.(May 2005)

In rural areas, communication networks that provide immediate access to remote data controls on field data can improve the efficiency and effectiveness of operations and maintenance activities.(5/1/2005)

In the Washington, D.C. region, SmarTrip cards used to pay both parking fees and subway fares were considered easy to use and were rated high for usefulness.(25 March 2005)

In the Puget Sound region of Washington State, a fare payment integration system that used joint passes to allow base fares to be transferred between agencies increased the percentage of riders that made transfers.(25 March 2005)

The Washington, D.C. region Metrorail service required that SmarTrip cards be used to pay for parking at all Metrorail stations increasing the purchase of cards from 8,000 per month to 75,000 per month during the first two months.(25 March 2005)

Evaluation data show that adaptive signal control strategies can improve travel times in comparison to optimized signal timing plans.(2 February 2005)

In the Washington DC metropolitan area, drivers who use route-specific travel time information instead of wide-area traffic advisories can improve on-time performance by 5 to 13 percent.(9-13 January 2005)

An automated work zone information system deployed near Los Angeles, California, reduced freeway delay by 46 percent.(9-13 January 2005)

Modeling data indicated that an automated work zone information system deployed on I-5 near Los Angeles contributed to a 4.3 percent increase in diversions and an 81 percent increase in average network speed.(9-13 January 2005)

In North Carolina, a survey of motorists who experienced a smart work zone information system on I-95 found that 85 percent of respondents changed routes at least once in response to the delay and alternate route information posted.(9-13 January 2005)

Freeway lane reversal improved traffic volumes by 44 percent following South Carolina hurricane(2005)

An automated work zone information system deployed near Los Angeles effectively diverted traffic to alternate routes during periods of congestion.(2005)

Deployment experiences document the importance of traveler information and list top sources of traveler information.(2005)

In Los Angeles, a survey of motorists who experienced an automated work zone information system found that 78 percent of respondents changed their route based on the information provided.(2005)

In Colorado, an automated commercial vehicle pre-screening system installed at three ports of entry check stations saved 48,200 gallons of fuel per month.(12/29/2004)

In Colorado, an automated commercial vehicle pre-screening system installed at three ports of entry check stations saved approximately 8,000 vehicle hours of delay per month.(12/29/2004)

During lane closures in the Minneapolis/St. Paul region a dynamic late merge system reduced confusion and aggressive driving, decreased queue lengths, and reduced congestion.(28 December 2004)

In Central Florida, focus group participants involved in a smart card study using a single card for multiple payment applications indicated that the card provided convenience and improved their transportation experience.(8/1/2004)

HAZMAT safety and security technologies can have tremendous societal cost savings well beyond the break even point for benefits and costs.(11 November 2004)

HAZMAT safety and security technologies can reduce the potential for terrorist consequences by approximately 36 percent.(11 November 2004)

Across the nation, traffic signal retiming programs have resulted in travel time and delay reductions of 5 to 20 percent, and fuel savings of 10 to 15 percent. (November/December 2004)

In Oakland County, Michigan retiming 640 traffic signals during a two-phase project resulted in Carbon monoxide reductions of 1.7 and 2.5 percent, Nitrogen oxide reductions of 1.9 and 3.5 percent, and hydrocarbon reductions of 2.7 and 4.2 percent.(November/December 2004)

In Oakland County, Michigan a two-phase project to retime 640 traffic signals resulted in a benefit-cost ratio of 175:1 for the first phase and 55:1 for the second.(November/December 2004)

Survey data collected from tractor trailer drivers with one to three years of experience driving with intelligent vehicle safety systems (IVSS) indicate that IVSS lowers their perceived workload by 14 to 21 percent over a range of driving conditions.(28 October 2004)

Based on all police-reported crashes in 7 states over 2 years, electronic stability control (ESC) reduced single-vehicle crash involvement risk by approximately 41 percent and single-vehicle injury crash involvement risk by 41 percent.(8 October 2004)

The Illinois DOT enhanced work zone safety on I-55 by deploying an automated traffic control system that posted traffic information and enforcement updates (number of citations issued) on dynamic message signs located upstream of the work zone.(October 2004)

The Illinois DOT staff reported a high level of satisfaction with the automated traffic control system deployed during the reconstruction of Interstate 55.(October 2004)

The Illinois DOT reduced operating costs during the reconstruction of I-55 by deploying an automated traffic control system and eliminating the need for constant traffic monitoring.(October 2004)

The Illinois DOT indicated that an automated traffic control system deployed during the reconstruction of I-55 improved mobility by preventing severe congestion in the work zone. (October 2004)

A dynamic lane merge system deployed at a work zone outside Detroit reduced aggressive driving maneuvers.(October 2004)

A dynamic lane merge system deployed in a work zone outside Detroit increased PM peak travel speeds by 15 percent, no change in AM peak speeds.(October 2004)

A dynamic lane merge system deployed outside Detroit was found to be cost-effective based on an analysis of system cost and motorist time and fuel savings.(October 2004)

In North Carolina, a survey of local residents near the Smart Work Zone systems found that over 95 percent of motorists surveyed would support use of these systems in the future.(September 2004)

In North Carolina, Smart Work Zone systems increased alternate route usage by 10 to 15 percent when specific delay and alternate route information was posted on roadside dynamic message signs.(September 2004)

An analysis of the effectiveness of electronic stability control (ESC) at reducing single-vehicle crashes in passenger cars and SUVs (1997-2002 crash data from five States) suggested that single-vehicle crashes were reduced by 35 percent for passenger cars and by 67 percent for SUVs.(September 2004)

In Chicago, a 2004 feasibility study indicated that automated truck-way technologies (automatic truck steering, speed, and platoon spacing control) would be economically feasible by 2015 assuming there was an increase in demand and lower relative costs for future deployments.(8/19/2004)

In Chicago, a feasibility study indicated that automated truck-way technologies (automatic truck steering, speed, and platoon spacing control) would save travel time and reduce fuel consumption.(8/19/2004)

In the central area of Chicago, a 2004 feasibility study indicated that collision warning systems on buses would not be cost-effective in the near term.(8/19/2004)

In the central area of Chicago, a feasibility study indicated that driver assistance technologies and transit signal priority for bus rapid transit would be cost-effective.(8/19/2004)

Proof-of-payment systems that use ticket vending/validating machines can reduce boarding times by up to 38 percent.(August 2004)

In North Carolina, a wet pavement detection system on I-85 yielded a 39 percent reduction in the annual crash rate under wet conditions.(August 2004)

In Salt Lake City, Utah, a transit Connection Protection system yielded a small, but not statistically significant, increase in the number of travelers satisfied with their travel experience; 87 percent compared to 85 percent.(5/12/2004)

Signal retiming projects in several U.S. and Canadian cities decreased delay by 13 to 94 percent, and improved travel times by 7 to 25 percent.(April 2004)

Signal retiming projects in several U.S. and Canadian cities contributed to a reduction in crash frequency.(April 2004)

Signal retiming projects in several U.S. and Canadian cities reduced fuel consumption by 2 to 9 percent. (April 2004)

On the Pennsylvania Turnpike, EZ-Pass participation and variable tolling were projected to decrease peak period traffic congestion at urban interchanges by 15 to 20 percent and have minimal impacts on non-turnpike diversion routes.(8 March 2004)

In Utah, incident management teams in Salt Lake Valley area decreased incident duration by approximately 20 minutes per incident on three major interstates.(March 2004)

In Salt Lake Valley, Utah a ramp metering study showed that with an 8 second metering cycle, mainline peak period delay decreased by 36 percent, or 54 seconds per vehicle.(March 2004)

In North Carolina, a modeling study indicated that work zone delay messages reduced maximum traffic backups by 56 percent and contributed to 55 percent reduction in traveler delay.(11-15 January 2004.)

In a mountainous area of Spokane, Washington, 94 percent of travelers surveyed indicated that a road weather information website made them better prepared to travel; 56 percent agreed the information helped them avoid travel delays.(8 January 2004)

In a mountainous region of Spokane, Washington, about one-third of CVOs interviewed would consider changing routes based on the information provided on a road weather information website and highway advisory radio system; however, few could identify viable alternate routes. (8 January 2004)

In Virginia, an evaluation of 511 services indicated 90 percent of callers found the service useful, and nearly half adjusted their travel plans based on the information provided.(January 2004)

A Kansas DOT survey of State and local transportation agencies found that AVL applications for highway maintenance can have benefit-to-cost ratios ranging from 2.6:1 to 24:1 or higher.(January 2004)

Final Evaluation Report for the Greater Yellowstone Regional Traveler and Weather Information System (GYRTWIS)(12/30/2003)

In 2002, the Maryland CHART highway incident management program reduced delay by about 30 million vehicle hours and saved about 5 million gallons of fuel.(November 2003)

In 2002 the Maryland State CHART highway incident management system facilitated a 28.6 percent reduction on the average incident duration leading to an estimated 377 fewer secondary incidents. (November 2003)

Freight Information Real-Time System for Transport (FIRST): Evaluation Final Report(5 October 2003)

Intersection collision avoidance systems deployed at intersections with high crash frequencies or high rates of severe injury are projected to recoup initial costs within one year, through a reduction in crashes.(September 2003)

In-vehicle rollover advisory control warning messages are expected to prevent 20 percent of rollover crashes caused by excessive speed in curves, based on driving data collected during a Freightliner FOT.(September 2003)

Coordinated signal timing on the arterial network in Syracuse, New York reduced vehicular delay by 14 to 19 percent, decreased total stops by 11 to 16 percent, and increased average speed by 7 to 17 percent.(September 2003)

By implementing coordinated signal timing on the arterial network in Syracuse, New York total fuel consumption was reduced by 9 to 13 percent, average fuel consumption declined by 7 to 14 percent, average vehicle emissions decreased by 9 to 13 percent.(September 2003)

A variable speed limit system deployed at a work zone on I-96 in Lansing, Michigan contributed to a decrease in the number of high-speed vehicles in the work zone.(September 2003)

A variable speed limit system deployed at a work zone on I-96 in Lansing, Michigan contributed to a decrease in travel times and an increase in average speeds.(September 2003)

In Montana, mainline weigh-in-motion scales can improve pavement fatigue estimates and save $4.1 million per year in construction costs.(11 August 2003)

Automatic anti-icing systems on bridges reduced crashes by 25 to 100 percent and benefit-to-cost ratios ranged from 1.8:1 to 3.4:1.(August 2003)

A survey of visitors to the Acadia National Park in Maine found that more than 80 percent who experienced on-board next-stop announcements and real-time bus departure signs agreed these technologies made it easier to get around.(June 2003)

In Portland, Oregon, the Tri-Met transit agency used archived AVL data to reduce variation in run times, improve schedule efficiency, and make effective use of resources.(June 2003)

In Salt Lake City, Utah the ADVISE fog warning system tested on a two-mile section of I-215 promoted more uniform traffic flow, reducing vehicle speed variability by 22 percent while speeds increased 11 percent.(June 2003)

A survey of bus riders within Acadia National Park in Maine found that 44 percent who experienced real-time parking information agreed the information helped them decide to ride the bus.(June 2003)

When transit signal priority was not used in Portland, Oregon; bus travel times increased up to 4.2 percent during peak periods and up to 1.5 percent in non-peak periods.(19-22 May 2003)

In Southeast Pennsylvania, survey results indicated that users of the SmarTraveler website were more likely to use the service again compared to users of the SmarTraveler telephone service.(19-22 May 2003)

In Tennessee, a low visibility warning system installed on I-75 dramatically reduced fog-related crashes.(May 2003)

Final Report of the FORETELL Consortium Operational Test: Weather Information for Surface Transportation(April 2003)

Intelligent Transportation Systems at the 2002 Salt Lake City Winter Olympic Games: Event Study Traffic Management and Traveler Information(April 2003)

A survey of visitors to the Acadia National Park in Maine found that 90 percent of respondents who used the real-time bus departure signs and 84 percent of respondents who experienced the automated on-board next-stop message announcements agreed these technologies made it easier to get around.(February 2003)

A survey of visitors to the Acadia National Park in Maine found that 74 percent of respondents who experienced real-time parking information agreed these technologies made it easier to get around.(February 2003)

A survey of visitors to the Acadia National Park in Maine found that 74 percent of respondents who saw parking availability information agreed these technologies made it easier to get around.(February 2003)

A survey of visitors to the Acadia National Park in Maine found that 90 percent of respondents who used the real-time bus departure signs and 84 percent of respondents who experienced the automated on-board next-stop message announcements agreed these technologies made it easier to get around.(February 2003)

Scheduling software enabled St. Johns County in northeast Florida to reduce office staff from 9 to 4.5 full-time equivalents, while doubling the number of daily trips on the paratransit service, saving $58,000 per year.(February 2003)

A simulation study in the Washington, DC area found that 40 percent of travelers who use pre-trip traveler information would save $60.00 or more per year as a result of fewer early and late arrivals.(12-16 January 2003)

An I-40 work zone in Arkansas equipped with an automated work zone information system had fewer fatal crashes compared to similar sites without the technology.(12-16 January 2003)

A simulation study in the Washington, DC area found that regular users of pre trip traveler information reduced their frequency early and late arrivals by 56 and 52 percent, respectively.(12-16 January 2003)

A nationwide survey evaluating overheight/oversize warning systems found that eight states that deployed active infrared light or laser activated warning systems had fewer overheight load strikes on infrastructure components.(12-16 January 2003)

Electronic supply chain manifest systems, reduce the amount of time and paperwork required to transfer load and can improve operational efficiencies for shippers/receivers, trucking companies, and air cargo carriers.(December 2002)

In Los Angeles, California, the installation of a "second train coming" warning system at a light rail transit grade crossing reduced risky behavior of pedestrians and surveyed pedestrians felt that safety was improved.(November 2002)

In Baltimore, a "second train coming" warning system decreased the frequency of the most common risky behavior at crossings (i.e., drivers that crossed the tracks after the protection gates began to ascend from the first train before the protection gates could be redeployed for the second train) by 26 percent.(November 2002)

A study of the Coordinated Highways Action Response Team in Maryland found that the system reduced incident duration and saved approximately 4.1 million gallons of fuel in 2000.(14-17 October 2002)

In Dallas, Texas, simulation found that transit signal priority reduced bus travel time up to 11 percent during peak periods, reduced car travel times up to 16 percent, vehicle delay up to 4 percent and person delay up to 6 percent.(14-17 October 2002)

A study of the Coordinated Highways Action Response Team in Maryland found that the system reduced average incident duration by 57 percent in 2000.(14-17 October 2002)

A simulation study found that drivers using traveler information arrived at their destination within 15 minutes of the target arrival time 79 percent of the time; this percentage drops to 42 without traveler information.(14-18 October 2002)

TMC staff in Pittsburgh, Pennsylvania found real-time traffic information useful and noted that it improved coverage for incident management.(5 September 2002)

In Minneapolis-St.Paul, an evaluation of the effectiveness of ramp meters on four test corridors showed that the number of commuters who supported a complete ramp meter shutdown declined significantly from 21 percent in 2000 to about 14 percent in 2001.(10 May 2002)

In Minneapolis-St.Paul, an evaluation of the effectiveness of ramp meters on four test corridors showed that freeway travel speeds decreased 5 to 10 percent and freeway travel times increased 5 to 10 percent between 2000 and 2001.(10 May 2002)

In Minneapolis-St.Paul, an evaluation of the effectiveness of ramp meters on four test corridors showed that the number of crashes recorded for the interim period with reduced ramp metering capacity was 15 percent higher that the average number of crashes measured for the previous fully metered periods. (10 May 2002)

Evaluation of Variable Message Signs in Wisconsin: Driver Survey(May 2002)

A study evaluating data archiving at more than 60 organizations found that data warehousing generated an average return on investment of 401 percent over three years.(5/1/2002)

Houston Smart Commuter(April 2002)

In Kentucky and Virginia, state overhead costs required to maintain motor carrier accounts were estimated to decrease 35 percent for each motor carrier participating in electronic credentialing. (March 2002)

An evaluation of CVISN technologies found that electronic credentialing enabled carriers to commission new vehicles 60 percent faster, and saved 60 to 75 percent on credentialing costs by reducing paperwork.(March 2002)

Most truck drivers who participated in an evaluation of CVISN technology felt that electronic screening saved them time but lacked a set of standards governing inspection selection; motor carriers were concerned with the cost-effectiveness of the technology.(March 2002)

An evaluation of CVISN technologies found that electronic screening techniques that promote compliance with commercial vehicle safety inspections could prevent thousands of truck accidents each year.(March 2002)

CVO inspectors participating in CVISN focus groups felt that CVISN technology saved time, and improved the speed and accuracy of data reporting. (March 2002)

In Washington State, 80 percent of winter maintenance personnel that used the statewide road/weather information website said the National Weather Service warnings, satellite and radar images, and weather maps were useful.(March 2002)

The CORSIM simulation model has been used to estimate ramp metering speed improvements at the merge influence area under different ramp and mainline volumes, acceleration lane lengths, and number of lanes conditions, and the simulated outputs show that the average speeds at the merge influence areas increase when on-ramp junctions are metered, and that the increase is most prevalent under high traffic volumes, short acceleration lane, and low number of mainline lanes. (13-18 January 2002)

During the A.M. peak period, transit signal priority on an arterial route in Arlington, Virginia could reduce bus travel time by 4.0 to 9.1 percent, decrease person delay of bus passengers by 6.5 to 14.2 percent, and reduce transit vehicle stops by 1.5 to 2.9 percent.(13-17 January 2002)

In Chicago, A CTA survey of smartcard users found that features related to convenience, rail use, and speed were most liked by program participants; 21 percent rated convenience over the magnetic stripe card as their single favorite feature of the system. The most desired features were the multi-use functions and ability to recharge the smartcard via the Internet and credit card.(13-17 January 2002.)

A simulation study in Minneapolis-St. Paul estimated that ramp metering decreased total system travel time by 6 to16 percent and increased average mainline speeds by 13 to 26 percent.( 13-17 January 2002)

Evaluation studies in Canada, the Netherlands, and Australia showed that roadways equipped with automated speed enforcement can reduce the number of speeding vehicles by 27 to 78 percent.(13-17 January 2002)

A simulation study in Minneapolis-St. Paul estimated that ramp metering saved 2 to 55 percent of the fuel expended at each ramp.( 13-17 January 2002)

In Texas, police who used remote camera/radar systems to enforce work zone speed limits noted improved safety to officers, but expressed some concern over effectiveness in identifying speeding vehicles.(13-17 January 2002)

During the A.M. peak period, transit signal priority on an arterial route in Arlington, Virginia could increase carbon monoxide emissions by 5.6 percent and decrease nitrogen emissions by 1.7 percent.(13-17 January 2002)

Ninety-seven (97) percent of the motoring public found that predicted travel time information was useful when posted at a work zone on I-75 near Dayton, Ohio. (January 2002)

An evaluation of electronic toll collection systems at three major toll plazas outside Baltimore, Maryland indicated these systems reduced environmentally harmful emissions by 16 to 63 percent. (January 2002)

Evaluation of several transit signal priority systems found decreased bus travel time variability by 35 percent, lowered bus travel times by 6 to 27 percent, reduced AM peak intersection delay by 13 percent, and decreased signal-related bus stops by 50 percent.(January 2002)

A before-and-after study found that transit patrons experienced a smoother and more comfortable ride when a transit signal priority system was implemented in Seattle, Washington. (January 2002)

A study of travelers on Snoqualmie Pass, WA found that DMS can decrease mean driving speeds and reduce accident severity.(December 2001)

Simulations indicated that using a decision support tool to select alternative traffic control plans during non-recurring congestion in the Disney Land area of Anaheim, California could reduce travel time by 2 to 29 percent and decrease stop time by 15 to 56 percent. (December 2001)

In Colorado, a downhill truck speed warning system installed on a curved section of I-70 reduced 85th percentile truck speeds by 27 percent.(November 2001)

In the United States, approximately 60 to 80 percent of survey respondents approve of automated enforcement systems at traffic signals. (13 August 2001)

Automated enforcement at intersections in the United States reduced traffic signal violations by 20 to 87 percent.(13 August 2001)

The E-ZPass electronic toll collection system on the New Jersey Turnpike reduced delay for all vehicles by 85 percent saving an estimated 1.2 million gallons of fuel each year and eliminating approximately 0.35 tons of VOC and 0.056 tons NOx per weekday.(August 2001)

Automated pedestrian detection at signalized intersections tested in three U.S. cities reduced the number of pedestrians who began crossing during the steady DON’T WALK signal by 81 percent.(August 2001)

Implementation of the E-ZPass electronic toll collection system on the New Jersey Turnpike reduced delay for all vehicles by 85 percent saving approximately 2.1 million hours per year.(August 2001)

A simulation study of existing ITS (traveler information, ramp metering, and DMS) on a Detroit freeway demonstrated how these technologies can increase average vehicle speed, decreased average trip time, and reduce commuter delay by as much as 22 percent.(July 2001)

In Los Angeles, transit signal priority reduced total transit travel time by approximately 25 percent.(July 2001)

A simulation study of existing ITS (traveler information, ramp metering, and DMS) on a Detroit freeway demonstrated how these technologies were beneficial to corridor capacity.(July 2001)

In Los Angeles, adaptive signal control systems improved travel time by 13 percent, decreased stops by 31 percent, and reduced delay by 21 percent.(July 2001)

In Oregon, an analysis of archived incident data showed that freeway service patrol programs that expand from part-time to full-time operations can reduce incident duration by 15 to 30 percent.(6/30/2001)

In Oregon, an analysis of archived incident data showed that freeway service patrol programs that expand from part-time to full-time operations can reduce the average cost of a delay-causing incident to travelers by 36 to 66 percent.(6/30/2001)

Georgia’s Call Box Project: Evaluation and Future Deployment Recommendations(4-7 June 2001)

A model indicated that an advanced transportation management and traveler information system serving northern Kentucky and Cincinnati reduced crash fatalities by 3.2 percent during peak periods.(4-7 June 2001)

In Albuquerque, New Mexico, work zone surveillance and response at the "Big I" Interchange reduced average clearance time by 44 percent.(4-7 June 2001)

Modeling indicated that an advanced transportation management and traveler information system serving northern Kentucky and Cincinnati reduced delay by 0.2 minutes per trip during AM peak periods and by 0.6 minutes during PM peak periods. (4-7 June 2001)

During the first year of operations at the "Big I" work zone in Albuquerque, temporary traffic management and motorist assistance patrols reduced the average incident response time to less than eight minutes, and no fatalities were reported.(4-7 June 2001)

Modeling found emissions reductions of 3.7 to 4.6 percent due to an advanced transportation management and traveler information system serving northern Kentucky and Cincinnati.(4-7 June 2001)

Implementation of an anti-icing program in northern Idaho reduced winter maintenance labor hours by 62 percent and decreased abrasives usage by 83 percent.(20 March 2001)

An anti-icing program implemented by the Idaho Transportation Department resulted in a 83 percent decline in winter crash frequency.(20 March 2001)

Idaho Storm Warning System Operational Test - Final Report(14 March 2001)

A work zone management system with real-time traffic information on I-496 in Lansing, Michigan had a benefit-to-cost ratio of 2:1.(14 March 2001)

In Florida, the Orlando-Orange County Expressway Authority found that driver uncertainty about congestion at E-PASS toll stations contributed to a 48 percent increase in crashes.(March 2001)

Winter maintenance personnel indicated that road weather information systems improved the efficiency of response strategies, reduced maintenance costs (staff, equipment and materials), assisted with crew scheduling, and improved data sharing. (March 2001)

Winter maintenance personnel indicated that road weather information systems and anti-icing techniques reduce the frequency of crashes and insurance claims. (March 2001)

Winter maintenance personnel indicated that anti-icing techniques limit snow/ice bonding on roadways, improve plow efficiency, reduce the time required to clear snow/ice from roadways, reduce maintenance costs (overtime pay and materials), and reduce the need for abrasive cleanup activities.(March 2001)

Winter maintenance personnel indicated that road weather information systems reduced travel times, and anti-icing techniques decreased the need for road closures.(March 2001)

Winter maintenance personnel indicated that road weather information systems decrease salt usage, and anti-icing techniques limit damage to roadside vegetation, groundwater, and air quality (where abrasives are applied). (March 2001)

Most drivers believed that traffic conditions worsened when the Minneapolis-St. Paul ramp metering system was shut down and 80 percent supported reactivation.(February 2001)

When the ramp metering system on Minneapolis-St. Paul freeways was shut down, speeds fell by seven percent. (February 2001)

When the ramp metering system on Minneapolis-St. Paul freeways was deactivated, crash frequency increased by 26 percent.(February 2001)

In Erie County, New York, a field operational test found that automated collision notification systems reduced incident notification time from an average of 3 minutes to less than 1 minute.(February 2001)

Net annual vehicle emissions increased by 1,160 tons and fuel consumption decreased by 5.5 million gallons when the ramp metering system on Minneapolis-St. Paul freeways was shut down.(February 2001)

Volume decreased by 9 percent and peak period throughput was reduced by 14 percent when the ramp metering system on Minneapolis-St. Paul freeways was deactivated.(February 2001)

A study found that the benefit-to-cost ratio of the Minneapolis-St. Paul ramp metering system was 15:1.(February 2001)

Evaluation of the Environmental Effects of Intelligent Cruise Control (ICC) Vehicles(7-11 January 2001)

In Tucson, Arizona, models indicated adaptive signal control in conjunction with transit signal priority can decrease delay for travelers on main streets by 18.5 percent while decreasing delay for travelers on cross-streets by 28.4 percent.(7-13 January 2001)

Optimizing signal timing plans, coordinating traffic signal control, and implementing adaptive signal control in California reduced travel time by 7.4 to 11.4 percent, decreased delay by 16.5 to 24.9 percent, and reduced stops by 17 to 27 percent.(7-11 January 2001)

In Vantage, Washington an automated anti-icing system installed on I-90 had a benefit-to-cost ratio of 2.36:1, with benefits including fewer winter weather-related crashes and more efficient use of abrasives.(7-11 January 2001)

The estimated benefit-to-cost ratio for optimizing signal timing plans, coordinating traffic signal control, and implementing adaptive signal control in California was 17:1.(7-11 January 2001)

Optimized signal timing plans, coordinated traffic signal control, and adaptive signal control reduced fuel use by 7.8 percent in California.(7-11 January 2001)

Automated red light enforcement at 11 intersections in Oxnard, California reduced crashes by 7 percent, decreased right-angle crashes by 32 percent, lowered injury crashes by 29 percent, and reduced right-angle injury crashes by 68 percent.(7-11 January 2001)

In Vantage, Washington, the deployment of an automated anti-icing system on I-90 was projected to eliminate up to 80 percent of snow and ice related crashes.(7-11 January 2001)

In the Washington DC region, a simulation study indicated that commuters who use real-time travel time information to plan routes and departure times during peak periods can improve on-time reliability by 5 to 16 percent.(January 2001)

An evaluation of infrared brake screening systems at weigh stations indicated the technology increased the percentage of vehicles placed out of service because of brake problems by 250 percent.(December 2000)

Adaptive signal control systems in Los Angeles, Broward County, and Oakland County reduced vehicle stops by 28 to 41 percent (December 2000)

Adaptive signal control systems deployed in five metropolitan areas have reduced delay 19 to 44 percent.(December 2000)

Adaptive traffic signal control systems in Los Angeles, Broward County, and Newark decreased travel times by 13 to 25 percent. (December 2000)

Adaptive signal control may can lower operations and maintenance costs associated with traffic signal retiming; in Minnesota DOT signal technicians indicated that adaptive signal control systems were easy to operate and required minimal maintenance.(December 2000)

In 2000, a survey of Maryland motor carriers asked them if electronic screening at mainline speeds would decrease unsafe and illegal carriers; approximately 32 percent agreed, 25 percent disagreed, and 42 percent were neutral; 24 percent were willing to participate despite the possibility of incurring more costs.(14 November 2000)

In 2000, a survey of Maryland motor carriers indicated that electronic data interchange and Internet technologies were valued more by carriers with large fleets (25 or more vehicles) that conduct business with state agencies.(14 November 2000)

A simulation study of the road network in Seattle, Washington demonstrated that providing information on arterials as well as freeways in a traveler information system reduced vehicle-hours of delay by 3.4 percent and reduced the total number of stops by 5.5 percent.(6-9 November 2000)

A simulation study of the road network in Seattle, Washington demonstrated that providing information on arterials as well as freeways in a traveler information system increased throughput by 0.1 percent.(6-9 November 2000)

In Tennessee, a fog detection and warning system implemented in 1994 significantly improved safety as no fog-related accidents have occurred since implementation.(October 2000)

A simulation study in Seattle found that if 6 to 10 percent of travelers started using pre-trip traveler information during severe weather conditions, there would be a small positive impact on roadway system efficiency and mobility .(October 2000)

FleetForward Evaluation, Final Report.(October 2000)

In San Antonio, a modeling study found that if traffic congestion were to increase by 25 percent, posting nearby railroad crossing closing delays on freeway dynamic message signs would reduce crashes by 8.7 percent.(October 2000)

In San Antonio, a modeling study found that if traffic congestion were to increase by 25 percent, posting nearby railroad crossing closing delays on freeway dynamic message signs would reduce total network delay by up to 6.7 percent.(October 2000)

An evaluation of work zone safety technologies in Texas showed that speed display trailers can reduce average vehicle speeds by 5 mi/hr and decrease the number of vehicles traveling at excessive speeds in rural work zones. (2000)

In Sullivan City, Texas, a signal control system that gives priority to trucks has reduced truck stops by 100 for a weekly volume of 2,500 trucks and has reduced truck delay.(September 2000)

A preemptive signal control system used to minimize truck stops in Sullivan City, Texas has resulted in cost savings due to reduced fuel consumption and emissions, less pavement wear, and reduced tire and brake wear.(September 2000)

A survey conducted in 10 U.S. cities indicated that 76 to 80 percent of drivers strongly favor automated red light enforcement systems.(6-10 August 2000)

Simulation revealed that a freeway management system in Fargo, North Dakota could reduce network travel times by 8 percent and increase speeds by 8 percent when DMS are used to warn drivers of incidents.(6-10 August 2000)

An automated wet pavement warning system installed on a freeway ramp in Ft. Lauderdale reduced vehicle speeds by 10.2 mi/hr during heavy rain and by 4.6 mi/hr during periods of light rain. (6-10 August 2000)

Simulation revealed that, in Fargo, North Dakota, a freeway management system displaying incident warnings on DMS and integrated with adaptive signal control could decrease travel times by 18 percent and increase speeds by 21 percent. (6-10 August 2000)

In Denver, 80 percent of RTD dispatchers felt that the GPS functions of the transit AVL system were "easy" or "very easy" to use and approximately half of bus drivers and street supervisors felt likewise. (August 2000)

In Denver, transit AVL decreased early and late arrivals by 12 and 21 percent, respectively.(August 2000)

In Denver, on-board silent alarms installed on RTD buses contributed to a 33 percent reduction in bus passenger assaults between 1992 and 1997. (August 2000)

Impacts of Transit Fare Policy Initiatives Under an Automated Fare System(Summer 2000)

In Arizona and Missouri a survey of tourists found that those who used advanced traveler information systems believed the information they received save them time.(30 June 2000)

In 1998, in Portland, Oregon an automatic vehicle location system with computer aided dispatching improved on-time bus performance by 9 percent, reduced headway variability between buses by 5 percent, and decreased run-time by 3 percent.(Summer 2000)

Simulation results indicated that vehicle emissions could be reduced by two percent if arterial traffic flow data were included in the traveler information system in Seattle, Washington.(30 May 2000)

A model found that coordinating fixed signal timing plans along congested arterial corridors leading into Seattle, Washington would help reduce the number of expected crashes by 2.5 percent and the frequency of fatal crashes by 1.1 percent.(30 May 2000)

Modeling indicated that coordinating fixed signal timing plans along congested arterial corridors leading into Seattle, Washington, and incorporating arterial traffic flow data into the traveler information system would reduce vehicle delay by 7 percent and 1.8 percent, respectively.(30 May 2000)

A model determined that incorporating arterial traffic flow data into the traveler information system in Seattle, Washington could decrease the number of stops by 5.6 percent.(30 May 2000)

Users of the Advanced Traveler Information System in Seattle, Washington were satisfied with the information on freeway and transit conditions provided via Web sites and a Traffic TV service.(30 May 2000)

In Nebraska, a portable speed detection and warning system placed upstream from an I-80 work zone decreased the highest 15 percent of vehicle speeds by about 5 mi/hr as vehicles approached the work zone lane merge area.(May 2000)

Modeling performed as part of an evaluation of nine ITS implementation projects in San Antonio, Texas indicated that integrating DMS, incident management, and arterial traffic control systems could reduce delay by 5.9 percent.(May 2000)

Modeling performed as part of an evaluation of nine ITS implementation projects in San Antonio, Texas indicated that users of an improved traveler information web site would receive annual benefits of a 5.4 percent reduction in delay.(May 2000)

In a rural area of Virginia, a collision countermeasure system installed on a two-way stop-controlled intersection reduced vehicle speeds by 2.4 mi/hr, and increased the average projected time to collision from 2.5 to 3.5 seconds.(1-4 May 2000)

Final Evaluation Report: Ambassador Bridge Border Crossing System (ABBCS) Field Operational Test(May 2000)

A survey of travelers indicated that 20 percent of motorists traveling on two bridges in Lee County, Florida adjusted their departure times in response to an electronic payment value pricing program that gave motorists a 50 percent discount on bridge tolls during off peak periods.(1-4 May 2000)

An automated enforcement system in Charlotte, North Carolina reduced red light violations by 75 percent and decreased associated crashes by 9 percent. (May/June 2000)

Evaluation indicated that integrating DMS and incident management systems could reduce crashes by 2.8 percent, and that integrating DMS and arterial traffic control systems could decrease crashes by 2 percent, in San Antonio, Texas.(May 2000)

In San Antonio, Texas, focus group participants felt that DMS were a reliable source of traffic information.(May 2000)

Evaluation of freeway DMS integrated with incident management in San Antonio, Texas, found fuel consumption reduced by 1.2 percent; integrating the DMS with arterial traffic control systems could save 1.4 percent. (May 2000)

Modeling performed as part of an evaluation of nine ITS implementation projects in San Antonio, Texas indicated that drivers of vehicles with in-vehicle navigation devices could experience an 8.1 percent reduction in delay.(May 2000)

In Georgia, call boxes installed on a 39-mile section of I-185 were estimated to eliminate one injury per year, and one fatality every five years.(May 2000)

In Greenwood, Nebraska a portable traffic management system designed to caution drivers of work zone activity and encourage use of alternative routes during periods of congestion increased traffic diversion by 4 percent.(May 2000)

In 1997, the Maryland CHART highway incident management program reduced delay by approximately 15.6 million vehicle hours and saved about 5.85 million gallons of fuel.(May 2000)

In San Antonio, Texas, usage of a traveler information web site increased at a rate of 19 percent per year and spiked during severe weather events.(May 2000)

In San Antonio, Texas, 60 percent of drivers of transit vehicles equipped with in-vehicle navigation devices reported that they saved time and felt safer.(May 2000)

In Iowa, a CB radio alert system designed to warn truckers of slow moving maintenance vehicles on freeways effectively warned 39 of 59 truckers interviewed that remembered seeing the maintenance work in-progress.(May 2000)

Evaluation of ITS implementation projects in San Antonio, Texas, demonstrated that integrating freeway DMS with incident management systems could reduce fuel consumption by 1.2 percent, and that integrating the DMS with arterial traffic control systems could save 1.4 percent. (May 2000)

In Greenwood, Nebraska a survey of travelers indicated that 29 percent of drivers who remembered DMS messages at a work zone on I-80 thought the alternate route information provided was not useful; 23 percent thought the caution messages were not useful.(May 2000)

An evaluation of traffic information used by travelers in the Detroit area, in 2000, found that most drivers perceived commercial radio as "more reliable" than television or dynamic message sign information. (May 2000)

In 1997, the Maryland CHART highway incident management program facilitated a 35 percent reduction in the average incident duration which led to an estimated 337 fewer secondary incidents. (May 2000)

Based on the survey results only 9 percent of households were aware of TravInfo, and less than 1 percent of the Bay area commuters who used traveler information used TravInfo.(25 April 2000)

In Arizona, traffic signal coordination among two jurisdictions contributed to a 1.6 percent reduction in fuel consumption and a 1.2 increase in carbon monoxide emissions. (April 2000)

In Phoenix, Arizona, an evaluation of traveler information provided on cable television found that 29 percent of surveyed respondents thought the traffic channel was useful.(April 2000)

Traffic signal coordination among two jurisdictions in Arizona resulted in a 6.2 percent increase in vehicle speeds; optimization of the coordinated timing plans was predicted to reduced AM peak period delay by 21 percent.(April 2000)

In Phoenix, Arizona, an evaluation of website traveler information found that 16 percent of surveyed respondents thought the web site information was useful.(April 2000)

An advanced curve warning system on an interstate route in northern California caused over 68 percent of drivers to reduce their speed. (April 2000)

More than 76 percent of drivers on an interstate route in northern California indicated that messages displayed by an advanced curve warning system were useful.(April 2000)

Crash risk along a corridor in Arizona was reduced by 6.7 percent due to traffic signal coordination among two jurisdictions.(April 2000)

Automated red light enforcement in Fairfax, Virginia has reduced the crash rate by 35 percent. (16 March 2000)

Features of Traffic and Transit Internet Sites(February 2000)

Optimizing signal timing at 700 intersections in the Tysons Corner area of Northern Virginia lead to a 9 percent reduction in fuel consumption and a 134,600 kilogram decrease in annual emissions.(March 2000)

By optimizing signal timing at 700 intersections in the Tysons Corner area of Northern Virginia, delay was reduced by approximately 22 percent and stops were reduced by roughly 6 percent.(March 2000)

In Ames, Iowa, an automated horn warning system that alerted motorists and pedestrians of oncoming trains reduced the area impacted by noise levels greater than 80 dBA from 171 acres to less than 6 acres.(2000)

In Ames, Iowa, a survey of area residents indicated that 78 percent preferred an automated horn warning system that reduce the area impacted by excessive noise from 171 acres to less than 6 acres. (2000)

Automated red light enforcement systems have reduced right-angle crashes by 32 percent in Victoria, Australia; and decreased crash frequency by 47 percent and red light violations by 53 percent in Howard County, Maryland.(January/February 2000)

A dynamic truck down hill speed warning system installed on I-70 in Colorado reduced the average speed of passing trucks by approximately 5.2 mi/hr. (15 December 1999)

A small-scale study of truck drivers who experienced a dynamic truck down hill speed warning system in Colorado indicated that most drivers thought it was helpful.(15 December 1999)

An automated enforcement systems in California decreased highway-rail grade crossing violations by up to 92 percent.(December 1999)

Automated enforcement systems in Arizona, California, Maryland, and New York have reduced red-light violations by 20 to 60 percent and crashes by 22 to 51 percent. (December 1999)

A 1999 FHWA study suggested that lane departure warning systems have the potential to reduce road departure crashes by 10 percent for passenger vehicles and 30 percent for heavy trucks.(December 1999)

Evaluation of an automated commercial vehicle safety enforcement system in New South Wales, Australia found that the system had a benefit-to-cost ratio of 2.5:1. (December 1999)

A simulation study of an Indiana weigh station found that implementing weigh-in-motion technology and equipping 40 to 50 percent of trucks with electronic screening transponders would significantly reduce queue overflows.(8-12 November 1999)

A simulation study of five intersections in Oakland, Michigan indicated that adaptive signal control resulted in lower travel times than optimized fixed-time signal control.(8-12 November 1999)

Incident Management Simulation on a Freeway Corridor in Honolulu(8-12 November 1999)

In the mid-continent transportation corridor, a study of electronic screening technologies found that benefit-to-cost ratios for motor carriers and state agencies range from 6.0:1 to 11.9:1.(8-12 November 1999)

In the mid-continent transportation corridor, a study of electronic border clearance technologies found that benefit-to-cost ratios for motor carriers range from 85:1 to 718:1(8-12 November 1999)

In the mid-continent transportation corridor, a study of electronic credentialing found that benefit-to-cost ratios for motor carriers and state agencies range from 0.7 to 2.7.(8-12 November 1999)

An analysis of the I-90 ramp closure system in Minnesota found benefit-cost ratios ranging from 0.13:1 to 3:1 with varying estimates of crash and delay reductions.(October 1999)

In Michigan, a survey of test drivers indicated that participants preferred using "adaptive cruise control" over "conventional cruise control" or "manual control" in terms of comfort, convenience, and enjoyment; however, with respect to safety, drivers preferred "manual control."(October 1999)

In Michigan, an evaluation of adaptive cruise control indicated that the technology was effective at reducing risky lane changes in response to slower traffic, but took 0.3 seconds longer than manually controlled vehicles to respond to lead vehicle brake lights.(October 1999)

During a 1998 snow storm, Mn/DOT reduced roadway clearance costs by 18 percent on I-90 by activating a freeway gate closure system to limit vehicle interference and reduce snow compaction problems that increase work for plows.(October 1999)

In Michigan, an evaluation of adaptive cruise control indicated that the technology would improve roadway capacity under conditions of high velocity and short time-headway settings (one second), and reduce road capacity if longer time-headway settings (two seconds) were used.(October 1999)

In Michigan, an analysis of adaptive cruise control indicated that the technology reduced fuel consumption and emissions by limiting throttle fluctuations.(October 1999)

A simulation study indicated that vehicle throughput would increase if arterial data were integrated with freeway data in an Advanced Traveler Information System in Seattle, Washington. (September 1999)

A simulation study indicated that integrating traveler information with traffic and incident management systems in Seattle, Washington could reduce emissions by 1 to 3 percent, lower fuel consumption by 0.8 percent, and improve fuel economy by 1.3 percent.(September 1999)

A simulation study indicated that integrating traveler information with traffic and incident management systems in Seattle, Washington could diminish delay by 1 to 7 percent, reduce stops by about 5 percent, lower travel time variability by 2.5 percent, and improve trip time reliability by 1.2 percent.(September 1999)

The Hoosier Helper program freeway service patrol program in Northwest Indiana had a projected benefit-to-cost ratio of 4.7:1 for daytime operations, and 13.3:1 for 24 hour operations.(September/October 1999)

A six year evaluation of freeway ramp metering in Arizona found that that the system reduced sideswipe accidents on the mainline by smoothing traffic flow, but increased rear-end accidents on entrance ramps where vehicles were required to slow down or stop unexpectedly.(August 1999)

Modeling indicated that emergency vehicle signal preemption at three intersections on a Virginia arterial route increased average travel time by 2.4 percent when priority was requested.(July 1999)

Implementation of an adaptive signal control system in Anaheim, California resulted in travel time changes ranging from a 10 percent decrease to a 15 percent increase. (July 1999)

More than 99 percent of surveyed users said they benefited from information provided by an advanced transportation management system and traveler information system serving northern Kentucky and Cincinnati. (June 1999)

Vehicle-pedestrian conflicts were reduced by 89 percent in the first half of the crossing and 43 percent in the second half with automated pedestrian detection at intersections in Los Angeles, California; Rochester, New York; and Phoenix, Arizona. (Spring/Summer 1999)

A simulation study of a transponder based system to improve border crossing processes for cars and trucks at the Peace Bridge between the U.S. and Canada found that, with 50 percent of the vehicles equipped with the technology, the average inspection time for cars and trucks would decrease by 14 to 66 percent.(April 1999)

Automated red light enforcement reduced the number of violations by 42 percent at 5 intersections in San Francisco, California. (March 1999)

During the initial deployment of electronic toll collection on the Carquinez Bridge (1996-1997) there was an increased number of crashes and personal injuries.(March 1999)

In California, electronic toll collection on the Carquinez Bridge decreased annual emissions of Carbon monoxide, Nitrogen oxides, and hydrocarbons.(March 1999)

In California, the time saving benefits of electronic toll collection on the Carquinez Bridge saved travelers more than a million dollars per year.(March 1999)

In California, electronic toll collection on the Carquinez Bridge saved 25,193 hours per year by improving traffic movement through the toll facility and reducing the time required to process transactions.(March 1999)

In 1999, a study in Seattle, Washington indicated that participants who used traveler information devices including wrist watches, in-vehicle components, and portable computers found the information was useful for making travel decisions.(5 January 1999)

A 1998 survey of transit riders in Ann Arbor, Michigan found that police presence and increased lighting had the greatest influence on riders' perception of personal security; emergency phones and video surveillance systems had little influence.(1999)

A 1998 survey of transit riders in Ann Arbor, Michigan indicated that police presence and increased lighting at transit centers had the greatest influence on riders' perception of personal security; on-board video surveillance systems and emergency phones had little influence.(1999)

Weather-related traffic signal timing along a Minneapolis/St. Paul corridor reduced vehicle delay nearly eight percent and vehicle stops by over five percent.(1999)

Speed-activated dynamic message signs with warning messages reduced vehicle speeds by 8 to 9 mi/hr; sustained effects for long-term work zones.(December 1998)

In Maryland, electronic screening and credentialing systems deployed as part of the CVISN program had an overall estimated benefit-to-cost ratio ranging from 3.28 to 4.68.(November 1998)

An evaluation of the Maryland Commercial Vehicle Information Systems and Networks program indicated the program would have a benefit-to-cost ratio ranging from 3.17 to 4.83 over a 10 year lifecycle.(November 1998)

In San Francisco, the TravInfo telephone service had a high level of customer satisfaction with the two highest ranking aspects of TravInfo being convenience (average score = 4.2) and ease of comprehension (average score = 4.3) on a scale of one to five, with five being very satisfied.(12-16 October 1998)

A survey of travelers in the Washington, DC region indicated that 86 percent favored the use of video technology to enforce aggressive driving laws.(11 September 1998)

Software supporting oversize/overweight permitting enables staff reduction from 21 to 9, statewide. (July 1998)

An adaptive signal control system in Oakland County, Michigan reduced travel time by 7.0 to 8.6 percent during peak periods.(4-6 May 1998)

There were 32 accidents along a transitway at the University of Minnesota before transit priority lights were installed, while no accidents were reported after installation of the lights.(2 February 1998)

Evaluation Results of Three Prototype Automatic Truck Rollover Warning Systems(11-15 January 1998)

Freeway Services Patrols: A State of the Practice(11-15 January 1998)

Impacts of Electronic Toll Collection on Vehicle Emissions(11-15 January 1998)

Final Report: Commercial Fleet Management Project(January 1998)

After a ramp rollover warning system was installed at three curved exit ramps on the beltway around Washington, DC, there were no accidents at any of these sites during the three year post deployment test period evaluated.(15 December 1997)

In Colorado, a dynamic truck downhill speed warning system (DSWS) installed on I-70 decreased the number of accidents by 13 percent.(15 December 1997)

Intelligent Time Savers, Life Savers(December 1997)

In the St. Paul, Minnesota region ramp metering has increased throughput by 30 percent and increased peak period speeds by 60 percent.(November 1997)

Developers claim that the equipment and operating cost for winter maintenance has been reduced by $11million to $14 million, due to the Indiana state DOT implementation of the Computer Aided System for Planning Efficient Routes (CASPER) system. (October 1997)

In Puget Sound, Washington, a survey of drivers equipped with in-vehicle emergency communications found that 95 percent of respondents felt "more secure" with Mayday voice communications, and 70 percent felt "more secure" with data communications.(September 1997)

Studies in six metropolitan areas of the United States and Australia, automated enforcement systems reduced red light violations by 20 to 60 percent, decreased right-angle crashes by 30 percent, and reduced crash injuries by 10 percent.(August 1997)

In Minneapolis, a traffic incident information pager service was used daily by 65 percent of participants, and at least once-per-week by 88 percent of participants; users decided to changed travel routes in 42 percent of the situations.(10 June 1997)

In Minneapolis, a traffic incident information pager service was used daily by 65 percent of participants, and used once-per-week or more by 88 percent of participants; users decided to changed travel routes in 42 percent of the situations.(10 June 1997)

Simulation of a network based on the Detroit Commercial Business District indicated that adaptive signal control for detours around an incident could reduce delay by 60 to 70 percent and that travel times can be reduced by 25 to 41 percent under non-incident conditions. (June 1997)

In Colorado, a down hill truck speed warning system installed on I-70 reduced runaway ramp usage by 24 percent and contributed to a 13 percent drop in crashes involving trucks and excessive speeds.(May 1997)

In the Minneapolis/St. Paul, a motorist survey found 61% of drivers who experienced a portable traffic management system at a work zone felt more informed about traffic conditions than at other work zones.(May 1997)

Evaluation Report for ITS for Voluntary Emission Reduction: An ITS Operational Test for Real-Time Vehicle Emissions Detection(May 1997)

In the Minneapolis/St. Paul, traffic speed data collected at two interstate work zones showed that when portable traffic management systems were deployed, work zone traffic volumes increased 4 to 7 percent during peak periods.(May 1997)

In the Minneapolis/St. Paul, a portable traffic management system installed at two interstate work zones improved safety by slowing approaching vehicles by 9 mi/hr and reducing speed variability by 70 percent. (May 1997)

In Brooklyn, an incident management system on the Gowanus and Prospect Expressways used CCTV, highway advisory radio, dynamic message signs, and a construction information hotline to improve average incident clearance time by about one hour, a 66 percent improvement.(May 1997)

A survey of drivers in Oakland County, Michigan revealed that 72 percent believe that they are better off after deployment of adaptive signal control. (May 1997)

In San Jose, California, a paratransit program equipped with AVL/CAD and an automated scheduling and routing system, realized increased ridership, better on-time performance, and a $500,000 reduction in annual operating costs. (March/April 1997)

In San Jose, California, a paratransit driver commented that she was satisfied with a new AVL/CAD scheduling and routing system, and said it was useful for settling disputes concerning on-time performance .(March/April 1997)

The delay reduction benefits of improved incident management in the Greater Houston area saved motorists approximately $8,440,000 annually. (7 February 1997)

Incident Management: Challenges, Strategies, and Solutions for Advancing Safety and Roadway Efficiency(February 1997)

Driver confidence in traveler information improved after implementation of the TransGuide freeway management system in San Antonio, Texas.(12-16 January 1997)

In San Antonio, Texas, a freeway management system reduced fuel consumption by and estimated 2,600 gallons per major incident resulting in an annual savings of 1.65 million dollars.(12-16 January 1997)

In San Antonio, Texas, a freeway management system led to an estimated delay savings of 700 vehicle-hours per major incident.(12-16 January 1997)

Following deployment of the TransGuide freeway management system in San Antonio, Texas, crash frequency was reduced by 41 percent and incident response time decreased by 20 percent.(12-16 January 1997)

A NHTSA modeling study indicated that forward collision warning systems, lane change/merge crash avoidance systems, and road-departure countermeasure systems would yield and annual economic benefit of $25.6 billion (1994).(1997)

In Minnesota, a survey of travelers indicated that Smart Work Zone warning signs were accurate, useful, and gave travelers the information they needed.(January 1997)

A series of interviews with commercial vehicle operators across the U.S. indicated that truck and motorcoach drivers are in strong agreement in favor of some ITS applications, but have mixed opinions about other applications. (1997)

An NHTSA modeling study indicated that forward collision warning systems would be 51 percent effective, lane change/merge crash avoidance systems 37 percent effective, and the road-departure countermeasure systems 24 percent effective.(1997)

The Institute of Transportation Engineers (ITE) estimates that traffic signal improvements can reduce travel time by 8 to 25 percent. (1997)

In Virginia, the deployment of a freeway service patrols was positively received by the public; Virginia DOT received hundreds of “thank you” letters.(1997)

In Albuquerque, New Mexico, an ambulance provider increased its efficiency by 10 to 15 percent using AVL/CAD to improve route guidance.(January 1997)

An NHTSA modeling study indicated that forward collision warning systems would be 51 percent effective, lane change/merge crash avoidance systems would be 37 percent effective, and the road-departure countermeasure systems would be 24 percent effective.(1997)

In Philadelphia, the Traffic and Incident Management System (TIMS) on I-95 contributed to a 40 percent decrease in freeway incidents and reduced the incident-severity rate by 8 percent.(January 1997)

In Sweetwater, Wyoming a computer assisted dispatching system that allowed same-day ride requests contributed to an 80 percent increased in ridership (5,000 to 9,000 passengers per month), without requiring an increase in dispatch staff. (September 1996)

A two-year study by the American Trucking Associations Foundation found that the commercial vehicle administrative processes reduced carriers' costs by an estimated 9 to 18 percent when electronic data interchange technology was used. (Fall 1996)

In 1996, the project benefits of existing and planned deployments of transit ITS technologies were estimated to yield between $3.8 billion and $7.4 billion (discounted dollars for 1996) within several years.(July 1996)

The Advanced Driver and Vehicle Advisory Navigation Concept (ADVANCE) simulation study in the Northwest suburbs of Chicago indicated that motorists could use dynamic route guidance and reduce travel time by 4 percent under normal or recurring conditions.(July 1996)

An advanced signal system in Richmond, Virginia reduced travel time by 9 to 14 percent, decreased total delay by 14 to 30 percent, and reduced stops by 28 to 39 percent.(June 1996)

Simulations performed for the National ITS Architecture Program indicated that delay can be reduced by more than 20 percent when adaptive signal control is implemented. (June 1996)

An advanced signal system in Richmond, Virginia reduced fuel consumption by 10 to 12 percent and decreased vehicle emissions by 5 to 22 percent.(June 1996)

An initial evaluation of the Maryland CHART program indicated that lane sensors and freeway video cameras in the coverage area supported incident management and contributed to a 5 percent reduction in non-recurrent congestion delay.(May 1996)

Motor carriers involved in the Automated Mileage and State Line Crossing Operational Test indicated that the automated reporting features tested have the potential to reduce International Fuel Tax Agreement and International Registration Plan reporting costs by 33 to 50 percent.(May 1996)

A TravTek simulation found that using a market penetration rate of 30 percent and a constant average trip duration as a surrogate for maintaining a given level-of-service, dynamic route guidance would allow the system to handle a 10 percent increase in demand.(March 1996)

A TravTek evaluation found that the availability of navigational information may help reduce travel stress for drivers in unfamiliar areas; 38 percent of rental car users and 63 percent of local drivers found the device helpful for finding specific destinations in unfamiliar territory.(March 1996)

ITS CVO applications for administrative processes were projected to have a benefit-to-cost ratio ranging from 1:1 to 19.8:1.(1996)

Innovations in Transportation and Air Quality: Twelve Exemplary Projects(1996)

ITS CVO applications for hazardous materials incident response were projected to have a benefit-to-cost ratio ranging from 0.3:1 to 2.5:1.(1996)

A prototype CVO electronic screening and credentialing system deployed on two interstate corridors was projected to have a benefit-to-cost ratio of 3.6 over 20 years as a result of improved safety and productivity for agencies and commercial carriers.(1996)

ITS CVO applications for automated roadside safety inspections were projected to have a benefit-to-cost ratio ranging from 1.3:1 to 1.4:1.(1996)

ITS CVO applications for electronic screening were projected to have a benefit-to-cost ratio ranging from 1.9:1 to 6.5:1.(1996)

In Orlando, a TravTek simulation study found that motorists that use navigation devices reduce their crash risk by 4 percent as a result of improved wrong turn performance and the tendency of the system to route them through higher class (normally safer) facilities.(January 1996)

Based on a travel reduction ordinance requiring Phoenix employers with over 100 employees to reduce single-occupancy commuting trips by 5 percent, the City Public Transport Agency led the development of a Bus Card Plus system and as of 1996, 190 companies participated with a resulting 90 percent of express route fares paid by these bus pass cards.(1996)

ITS CVO applications for on-board safety monitoring were projected to have a benefit-to-cost ratio ranging from 0.02:1 to 0.49:1.(1996)

In Kansas City, Missouri an automatic vehicle location (AVL) system increase productivity by eliminating seven buses out of a 200 bus system that allowed Kansas City to recover their investment in AVL in two years.(14 November 1995)

In Kansas City, transit AVL systems improved on-time bus performance from 80 to 90 percent.(November 1995)

Smart card electronic payment systems can increase ridership, reduce administrative costs, and decrease fare evasion.(November 1995)

In Kansas City, a transit AVL system reduced the time required to respond to bus drivers' calls for assistance.(November 1995)

Transit AVL can improve O&M and reduce operating expenses.(November 1995)

In 1995, analysis of the TravLink test in the Minneapolis area found that slightly more than one access per participant per week.(November 1995)

A preliminary analyses of the potential impacts of an automated highway system on the Long Island Expressway and I-495 Capital Beltway was projected to improve capacity and reduce travel time by 38 to 48 percent.(October 1995)

A study found that use of the TravTek system for route planning yielded a time savings of 80 percent.(October 1995)

In Manchester, UK, transit smart cards that improve data accuracy and reduce data collection costs saved $1.5 million.(September 1995)

On the Tappan Zee Bridge toll plaza, a manual toll lane can accommodate 400 to 450 vehicles per hour while an electronic lane peaks at 1000 vehicles per hour.(5-8 August 1995)

In Baltimore and Kansas City, AVL improved on-time bus performance by 23 percent and 12 percent, respectively; in Milwaukee, AVL contributed to a 28 percent reduction in buses behind schedule by more than one minute.(July 1995)

A 1995 North American survey of traffic management centers using ramp metering, identified reductions of 15 to 50 percent in freeway crashes.(June 1995)

Fleet Increases Productivity by 15% using AVL System(April 1995)

Automated enforcement systems have reduced highway-rail crossing violations by 78 to 92 percent along two corridors in Los Angeles, California.(17 March 1995)

Automated enforcement systems have reduced red light violations by 50 to 60 percent at two intersections in Fort Mead, Florida and Jackson, Mississippi.(17 March 1995)

Incident Management via Courtesy Patrol: Evaluation of a Pilot Program in Colorado(22-28 January 1995)

Analysis of the Los Angeles Smart Traveler project that deployed a small number of information kiosks found that the number of daily accesses to the system ranged from 20 to 100 in a 20-hour day.(22-28 January 1995)

In Winston-Salem, North Carolina, a CAD scheduling system use to manage 17 transit vehicles decreased passenger wait time by more than 50 percent.(1995)

At a work zone in South Dakota, a speed monitoring and display system reduced the number of speeding passenger vehicles and trucks by as much as 25 and 40 percent respectively.(1995)

In Winston-Salem, North Carolina, a CAD scheduling system increased vehicle miles per passenger-trip by 5 percent, reduced operating expenses, and contributed to an expanding client list which grew from 1,000 to 2,000 in 6 months(1995)

Speed-activated dynamic message signs with warning messages reduced speeding vehicles by 50 percent or more in Virginia work zones. (August 1994)

A bus priority system on a major arterial in Portland, Oregon reduced bus travel times by five to eight percent. (July 1994)

Highway Helper Summary Report - Twin Cities Metro Area(July 1994)

Fuel consumption fell by 13 percent and vehicle emissions were reduced by 14 percent due to a computerized signal control system in Los Angeles, California.(June 1994)

A computerized signal control system in Los Angeles, California increased average speed by 16 percent, reduced travel time by 18 percent, decreased vehicle stops by 41 percent, and reduced delay by 44 percent. (June 1994)

In 1994, the HELP/Crescent project evaluated the potential benefits of implementing automatic vehicle identification, weigh-in-motion, electronic screening, credentialing, automatic vehicle classification, and integrated communications and databases, and projected that these systems would yield a benefit-to-cost ratio ranging from 4.8:1 to 12:1 for state governments.(February 1994)

Crash frequency declined when an advanced traffic management system and an advanced traveler information system were integrated in Oakland County, Michigan.(1994)

Integrating an advanced traffic management system and an advanced traveler information system in Oakland County, Michigan increased average speed and reduced the number of stops by 33 percent. (1994)

A model indicated that changes in travel behavior due to better traveler information in Boston, Massachusetts would result in a 25 percent reduction in volatile organic compounds, a 1.5 percent decline in nitrous oxide, and a 33 percent decrease in carbon monoxide.(July 1993)

Institutional Issues Affecting the Implementation of IVHS Technologies to Commercial Vehicle Operations in the State of Indiana(1993)

Incident Management Using Total Stations(August 1992)

In Long Island, New York, ramp metering and traveler information increased freeway speeds by 13 percent despite an 5 percent increase in vehicle-miles traveled during PM peak periods.(January 1992)

Several carriers reported that on-board monitoring systems enable carriers to increase loaded mileage by 9 to 16 percent, decrease operating costs, and save drivers time in reporting their status to dispatchers.(January 1992)

An ATA Foundation study (1992) found that trucking companies who use computer aided dispatch systems can make more runs per truck per day, and improve productivity by 5 to 25 percent.(1992)

An emergency vehicle signal preemption system in Houston, Texas reduced emergency vehicle travel time by 16 to 23 percent.(April 1991)

The Wisconsin DOT used an ice detection system and a snow forecasting model to aid in the dispatch of snow plows and deicers saving 4 hours per person for each significant storm (a value of around $144,000/storm), and approximately $75,000 in salt.(March/April 1990)

A feasibility study for electronic toll collection on the Florida Turnpike indicated that a 10 to 30 percent participation rate would yield benefit-to-cost ratios of 2:1 to 3:1, respectively.(1990)

In Denver, Colorado emergency vehicle signal preemption reduced response time by 14 to 23 percent.(5 October 1978)

The emergency vehicle crash rate fell by 71 percent after deployment of emergency vehicle signal preemption systems in St. Paul, Minnesota.(19 August 1977)