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Assessing the Business Case for Integrated Collision Avoidance Systems on Transit Buses

This document presents an analysis of Integrated Vehicle Based Safety Systems (IVBSS) for transit buses. The study took a three-pronged approach. The first was an analysis of the available IVBSS products, possible future products and the technologies. The second was a benefit-cost analysis of transit IVBSS. The third assessed the receptiveness among transit operators to use IVBSS products and the willingness of manufacturers to develop them. This study used the National Transit Database and crash data from 6 U.S. transit operators. The data show that there is an average of 1.5 collisions per transit bus and related annual costs of over $4,000. Of the technologies evaluated, only side object detection systems showed the potential to be cost effective. In general, transit agencies are receptive to in-vehicle safety devices when there is evidence of their effectiveness. Several vendors currently offer products while others are awaiting commitments from the U.S. DOT or coordinated transit industry interest before developing their products. It is recommended that the U.S. DOT pursue operational tests of the side object detection system and other stronger-performing systems in order to validate the findings of this study.