Intelligent Infrastructure - Roadway Operations & Maintenance http://www.itsoverview.its.dot.gov/ROM.asp ITS Costs >> From the 511 Deployment Coalition case study: total costs (to design, implement, and operate for one year) averaged $2.5 million among six statewide systems and $1.8 million among three metropolitan systems.05/17/2007 08:58:28 AMhttp://www.itscosts.its.dot.gov/its/benecost.nsf/0/DE036516C6B910C3852572DD0064D08C ITS Benefits >> Work zone construction staff in North Carolina observed a dramatic reduction in queue frequency and length with use of smart work zone traveler information system.03/30/2007 01:02:19 PMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/21AADDD19A082069852572600073D030 ITS Benefits >> Ninety-seven percent of the motoring public found predicted travel time information useful when posted at an I-75 work zone near Dayton, Ohio.03/30/2007 10:33:33 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/1ED443F7C9575DBC852572600066ECD5 ITS Benefits >> Automated work zone information near Los Angeles effective in diverting traffic to alternate routes during congested periods03/29/2007 10:11:29 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/A70ADBCAC89456AE85257260006E4D77 ITS Benefits >> 85% of I-95 travelers at a North Carolina work zone changed routes at least once in response to work zone delay messages, greater than 65% sometimes or often changed routes.03/21/2007 10:41:24 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/FC47E6A8BE1A031B852572600069B4FE ITS Benefits >> In Minnesota work zones, a portable traffic management system improved safety by slowing approaching vehicles by 9 mi/hr, reduced speed variability 70 percent.03/16/2007 12:35:57 PMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/ACCC9254FAD906A885257260006FB216 ITS Benefits >> 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.03/14/2007 10:13:09 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/F61943DF4661F59E85257260007508B4 ITS Benefits >> Dynamic Late Merge System reduces confusion and aggressive driving, decreases queue lengths, and reduces congestion during lane closures in the Minneapolis/St. Paul metropolitan area.03/12/2007 10:51:45 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/B706D19649FE2EDC852572600059EBF0 ITS Benefits >> An Automated Workzone Information System (AWIS) deployed near Los Angeles, California, reduced freeway delay by 46 percent.03/12/2007 08:56:34 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/F090809C3D57058A85257260007450BCITS Benefits >> Speed monitoring displays reduced the number of speeding two-axle vehicles at a South Dakota work zone by as much as 25 percent,40 percent for larger vehicles.03/05/2007 03:05:53 PMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/8F2306948210535B8525726000748E72 ITS Benefits >> A dynamic lane merge system reduced aggressive driving by smoothing traffic flow at merge points in a work zone outside Detroit.03/05/2007 02:36:32 PMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/26DA38163F4820A585257260005234F9ITS Benefits >> A Variable Speed Limit (VSL) system deployed in a work zone on I-96 in Lansing, Michigan reduced travel time, increased average speed, and decreased the percentage of high-speed vehicles.02/12/2007 09:00:35 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/F3678455A0AF32778525726000648619 ITS Benefits >> Models of work zone delay messages in North Carolina estimate 56 percent reduction in maximum traffic backups and 55 percent less traveler delay.02/09/2007 11:52:46 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/2B34D5EAE0CEA2C08525726000739B3C ITS Benefits >> Speed-activated dynamic message signs with warning messages reduce vehicle speeds 8-9 mi/hr; sustain effect for long-term work zones.02/05/2007 09:15:26 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/A820F8AA8A2EB378852572600074CEAE ITS Benefits >> In Virginia work zones, speed-activated dynamic message signs with warning messages reduce speeding vehicles by 50% or more.02/05/2007 09:09:55 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/E03F81943EA3961C852572600075418A ITS Lessons >> Consider deploying ITS in a work zone to improve traffic safety and mobility during construction.01/31/2007 12:58:37 PMhttp://www.itslessons.its.dot.gov/its/benecost.nsf/Lesson?OpenForm&871D8AECEDE03CEB8525726000594533 ITS Lessons >> Consider using real time traffic control system to overcome mobility and safety obstacles in a work zone.01/31/2007 12:36:56 PMhttp://www.itslessons.its.dot.gov/its/benecost.nsf/Lesson?OpenForm&A286EB6A08D7ECEB8525725F006CD882 ITS Benefits >> An automated traffic control system deployed by the Illinois DOT during reconstruction of a 40-mile section of Interstate 55 prevented severe congestion in the work zone.01/29/2007 09:25:37 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/F8D7396B1467FC7185257260006120B1 ITS Costs >> The use of ITS for a temporary construction zone management in Michigan yields a positive benefit cost ratio.01/29/2007 09:00:31 AMhttp://www.itscosts.its.dot.gov/its/benecost.nsf/0/2CF3390E645CEB768525725E006D3526 ITS Benefits >> Work zone management system with real-time traffic information on I-496 in Lansing, Michigan has benefit-to-cost ratio of 2:1. 01/23/2007 01:17:36 PMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/6765FBD588027D328525725E0069BB0C ITS Costs >> North Carolina DOT leased its first smart work zone system along I-95 near Fayetteville at a cost of $235,000.01/23/2007 09:14:42 AMhttp://www.itscosts.its.dot.gov/its/benecost.nsf/0/18C3C80CE95F9F1D85257253005B7D38 ITS Costs >> A real-time work zone traffic control system leased by the Illinois Department of Transportation cost $785,000.01/23/2007 09:07:05 AMhttp://www.itscosts.its.dot.gov/its/benecost.nsf/0/67C450890D2C541B85257254005B291D ITS Costs >> Michigan DOT leases a dynamic lane merge system for I-94 reconstruction project.01/23/2007 09:01:26 AMhttp://www.itscosts.its.dot.gov/its/benecost.nsf/0/DDE520872475EFCC8525725D0068879B ITS Costs >> Based on a study of 17 states, the majority of work zone ITS cost between $150,000 and $500,000.01/23/2007 08:57:01 AMhttp://www.itscosts.its.dot.gov/its/benecost.nsf/0/F8E9A5AC7A67BF2D852572550016F18D ITS Costs >> Mn/DOT deployed a dynamic late merge system for $900 per day per direction.01/23/2007 08:51:19 AMhttp://www.itscosts.its.dot.gov/its/benecost.nsf/0/951E7206E8D9FA89852572550016BE2C