Improving intersection safety: Reducing casualties at high-risk intersections in Surrey, Richmond and Vancouver

Date created: 
Intersections – Reducing Casualties
Improving intersection safety - British Columbia
Reduce Intersection related Casualties – Effective Policies
Intersection Safety
Traffic Volume
Restricted Left-Turns
Right-Turns on Red
Permissive Left-Turns
Casualty Reduction
Traffic Safety

In British Columbia (BC), over 20,000 injuries and 400 fatalities occurred each year at intersections between 2000 and 2004. Using Ordinary Least Squares regression analysis, the objective of this study is to identify which of the 12 intersection characteristics play a role in predicting intersection safety. Using data from 19 intersections from Surrey, Richmond and Vancouver from the years 2000 to 2004, the findings reveal that traffic volume, restricted left-turns, permissive left-turns and right-turn lanes are positive predictors of intersection casualties. Five policy alternatives are proposed: 1) status quo, 2) reducing traffic volume, 3) eliminating the use of restricted left-turns, 4) using protected over permissive left-turns and 5) prohibiting right-turn on red. The policies are evaluated using three criteria 1) cost; 2) reduced casualty and 3) time delay. Based on the evaluation, status quo emerges as the most effective recommendation for reducing intersection casualties and improving intersection safety.

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Copyright remains with the author
Senior supervisor: 
Master of Pubic Policy Program - Simon Fraser University
Thesis type: 
Project (M.P.P.)