Bus Safety Performance Monitoring and Analysis

James Strathman, Portland State University


This paper analyzes collision and non-collision incidents that occurred on TriMet’s bus system over a near two-year period. The bus route network was decomposed into stop and line haul segments, and a typology of models was estimated from segment level incident, risk exposure, and roadway feature data. The frequency of non-collision incidents – mainly slips, trips and falls – was estimated to be primarily related to associated risk exposure variables. The frequency of collision incidents was also estimated to be related to risk exposure variables, as well as a number of roadway design variables. The findings serve as an initial step in informing the safety planning process.

Project Details

Project Type:
Project Status:
End Date:
March 31,2013
UTC Grant Cycle:
OTREC 2012
UTC Funding:

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