AN ANALYSIS OF LEFT-TURN VEHICLE VS. PEDESTRIAN CRASHES AT ALL SIGNALISED INTERSECTIONS IN MELBOURNE

This paper summarises part of an assessment of left-turn vehicle versus pedestrian crashes at signalised intersections across Metropolitan Melbourne, Australia conducted for VicRoads in 2010. Objectives of this study include: evaluating data to establish the relative safety performance of different left-turn treatments (slip lanes, exclusive lanes or shared lanes) for pedestrians; identifying any patterns in the crash types observed for each left-turn treatment to determine if they suggest possible design improvement opportunities; and identifying whether modern high entry angle slip lanes have improved crash performance compared to older slip lane designs. This paper compares the proportion of crashes at each treatment type versus the proportion of this treatment at all signalised intersections on the Melbourne Metropolitan road network (as volume-based crash rates are impractical for a sufficient sample size); examines the detailed characteristics for each crash; and delivers findings.