Research Papers

Evaluation of Diagnosis Tools for Safety Improvement Projects

Filename FINAL-PAPER-09-student-and-CMRSC.docx
Filesize 2 MB
Version 1
Date added June 10, 2012
Downloaded 7 times/fois
Category 2012 CMRSC XXII Banff
Tags Student Paper Award Winner
Author/Auteur Rajib K. Sahaji, Peter Y. Park, George Eguakun, Angela Gardiner
Award/Prix Étudiant 3 Student

Rajib Sahaji accepts the third place prize

Rajib Sahaji accepts the third place prize.

Abstract

Cycling as a mode of travel is becoming more popular especially in urban areas like Montreal, Canada. With this reality come serious concerns for cyclist safety, initiating the need to study cyclist injury risk. Particular attention should be placed on intersections for which almost sixty percent of cyclist injuries occur in Montreal. Despite their importance in the safety literature, cyclist safety studies in North America have only recently begun to emerge. Of these studies, very few have looked at geometric design, built environment and traffic control attributes specific to each intersection. This study contributes to the important but limited body of literature on cyclist safety and seeks to respond to the current need to analyze signalized intersections and their designs, related to road geometry and traffic controls, to investigate which intersection attributes are associated with higher or lower risks of injury for cyclists. Using an extensive inventory of a large sample of signalized intersections on the island of Montreal, cyclist injury frequency models were calibrated using negative binomial regression techniques. Among other results, the presence of an arterial and bus stops at intersections were found to have a positive effect on cyclist injury occurrence, whereas protected left turns and pedestrian signals with countdown both have the opposite effect on cyclist injury occurrence. After controlling for other factors, it was also found that intersections with three approaches are safer than those with four approaches. Preliminary analysis also revealed that bicycle facility presence at intersections decreases the risk of injury through those intersections.

Rajib K. Sahaji, Peter Y. Park, George Eguakun, Angela Gardiner