Adoption of Highway Safety Manual Methodologies for Safety Performance Assessment of Ontario Highway Segments

摘要

This paper is based on a project that assessed implementation requirements for Ministry ofTransportation, Ontario (MTO) for the recently released Highway Safety Manual (HSM). It servesas an illustration of what it takes for other Canadian jurisdictions to assess their ownimplementation requirements for this tool. The focus is on a key application of interest to MTO --the evaluation of the safety impacts of alternative design scenarios using an algorithm thatapplies collision models and collision modification factors (CMFs). Overall, the recalibration ofthe HSM algorithm for rural two-lane and multilane segments, the two facility types addressed inthis paper,was successful. For individual variables for which CMFs are available, however, thereis some demonstrable bias indicating that the CMFs could be improved upon for the Ontarioapplication.