The goal of this research is to assist the Federal Transit Administration in facilitating the deployment of systems to mitigate transit bus rear-end collisions. This program specifically focused on active sensor rear impact collision warning systems (RICWS). Transit bus rear-end crashes are the most frequent occurring type of collision, accounting for approximately 36 percent of all incidents, with an associated average cost of $54,455 per crash. The preponderance of crashes occurred with buses stopped during daylight hours, good weather conditions, traversing a straight path, and the striking vehicle attempting no corrective action. A testbed RICWS data collection system was designed and built which included a recording system, digital video, a laser front-end sensor, and a light bar warning system to get the following vehicles attention. The RICWS was mounted on two Ann Arbor Transportation Authority buses which collected data from March - October 2003 over the regular bus routes. Three warning algorithms (CAMP, 0.225 G and 0.3 G threshold) were field tested. All algorithms were effective in causing the following vehicle drivers to modify their driving behavior to a safer manner. As a result of this program, a set of comprehensive RICWS specifications were generated as well as recommended next steps.
Develop Performance Specifications for Rear Impact Collision Warning System for Transit Buses
2003
pages
Report
No indication
English
Road Transportation , Transportation Safety , Transportation , Transportation & Traffic Planning , Warning systems , Rear end collisions , Buses , Detectors , Bus accidents , Collision avoidance , Research , Costs , Data collection , Ann Arbor (Michigan) , Vehicular traffic control , Traffic safety , Accident prevention , Accident analysis , Public transportation , Mass transportation , Transit buses , Rear impact collision warning system (RICWS) , Federal Transit Administration
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