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.
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 program resulted in an average 46-minute reduction in incident duration time and reduced incident delay by 7.25 million vehicle-hours. The NaviGAtor incident management program reduced the average incident duration time from 67 minutes to 21 minutes or by 69 percent. There were an estimated 13,544,000 vehicle-hours of delay before the program was implemented and only 6,290,000 vehicle-hours of delay after NaviGAtor. This amounts to a 54 percent reduction in delay.
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 > Information Dissemination > Dynamic Message Signs
Intelligent Transportation Systems > Traffic Incident Management > Mobilization & Response > Service Patrols
Intelligent Transportation Systems > Transportation Management Centers > Permanent TMCs > Freeway
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DMS, CMS, VMS, Changeable Message Signs, Variable Message Signs, freeway service patrol, courtesy patrols, highway helpers, freeway service patrols