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.
The benefits of the NaviGAtor incident management program were determined during a before-and-after study that analyzed twelve months of data (i.e., May 2003 to April 2004) from incident logs. The "before" conditions were estimated by analyzing incident information when a HERO could not respond, analyzing incidents that occurred outside of the NaviGAtor coverage area, and using public safety dispatch logs and personnel surveys to predict incident timelines when no NaviGAtor resources were employed. By comparing "before" conditions with "after" conditions when NaviGAtor incident management strategies were utilized, the benefits were determined in four areas: safety, mobility, energy and environment, and productivity.
The incident management program reduced annual gasoline consumption by over 5.17 million gallons and decreased diesel consumption by nearly 1.66 million gallons per year. Fuel consumption reductions were estimated based on delay savings, average speed in congestion, the percentage of cars and trucks, and the average fuel consumption of cars and trucks.
Carbon monoxide (CO) emissions fell by 2,457 tons, hydrocarbon (HC) emissions declined by 186 tons, and nitrous oxide (NOx) emissions decreased by 262 tons. Annual emissions reduction estimates were based upon vehicle-hours of incident delay and average tons per hour of emissions.
Benefits Analysis for the Georgia Department of Transportation NaviGAtor Program: Final Report
Author: Guin, Angshuman, et al. (URS Corporation and Georgia DOT)
Published By: Georgia DOT
Prepared by URS Corporation for the Georgia DOT
Source Date: August 2006
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Intelligent Transportation Systems > Traffic Incident Management > Mobilization & Response > Service Patrols
Intelligent Transportation Systems > Traffic Incident Management > Information Dissemination > Dynamic Message Signs
Intelligent Transportation Systems > Transportation Management Centers > Permanent TMCs > Freeway
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freeway service patrol, courtesy patrols, highway helpers, freeway service patrols, DMS, CMS, VMS, Changeable Message Signs, Variable Message Signs