Submission ID 92140

Session Title GD - Cycling Network Geometric Design Leaders
Title Factors Affecting Conflicts Between Bicyclists and Right Turning Vehicles and the Potential use of Simulation
Abstract

There is increasing interest in designing infrastructure systems to promote the safe use of forms of active transportation such as bicycling. Alternative approaches to the more reactive crash centered approach of evaluating safety, such as the use of surrogate safety measures, specifically traffic conflicts is considered as well as the potential for using microsimulation to obtain valuable insights. Most collisions between bicyclists and vehicles occurring at intersections are between right turning vehicles and bicyclists. The main objective of this study was to use cross-sectional regression models to investigate which intersection characteristics are associated with a significant effect on the frequency of right turning conflicts between vehicles and bicyclists and to compare the results to those obtained through microsimulation. Using data for 65 signalized intersection approaches across Canada, various intersection attributes were found to be associated with the frequency of right turning conflicts such as exposure levels, the lateral offset of the bicycle facility and the grade of the approach to the intersection. Some of the attributes associated with a significant effect on right turning conflict frequency were then adjusted in simulated intersections to determine their effect on simulated conflicts. The effects where then compared to those suggested by the regression models.
Presentation Description (max. 50 words)
Presenter / Author Information Robert Mansell, Toronto Metropolitan University
Robert Mansell, Toronto Metropolitan University
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