Research Papers

Multimodal Injury Risk Analysis of Road Users at Signalized and Non-Signalized Intersections

Filename 3A-Strauss_FP_Multimodal-Injury-Risk-Analysis-of-Road-Users-at-Signalized-and-Non-Signalized.pdf
Filesize 333 KB
Version 1
Date added June 16, 2014
Downloaded 10 times/fois
Category 2014 CMRSC XXIV Vancouver
Tags Research and Evaluation, Session 3A, Student Paper Award Winner
Author/Auteur Jillian Strauss, Luis F. Miranda-Moreno, Patrick Morency
Stream/Volet Research and Evaluation
Award/Prix Étudiant 1 Student

Slidedeck Presentation

3A Strauss_Multimodal Injury Risk Analysis of Road Users at Signalized and Non-Signalized

Abstract

This paper proposes a multimodal approach to study safety at intersections by simultaneously
analysing the safety and flow outcomes for both motorized and non-motorized traffic. This study
uses an extensive inventory of signalized and non-signalized intersections on the island of
Montreal, Quebec, Canada, containing disaggregate motor-vehicle, cyclist and pedestrian flows,
injury data, geometric design, traffic control and built environment characteristics in the vicinity
of each intersection. Bayesian multivariate Poisson models are used to analyze the injury and
traffic flow outcomes and to develop safety performance functions for each mode at both
facilities. After model calibration, contributing injury frequency factors are identified. Injury
frequency and injury risk measures are then generated to carry out a comparative study to
identify which mode is at greatest risk at intersections in Montreal. Among other results, this
study identified the significant effect that motor-vehicle traffic imposes on cyclist and pedestrian
injury occurrence. Motor-vehicle traffic is the main risk determinant for all injury and intersection
types. This highlights the need for safety improvements for cyclists and pedestrians who are, on
average, at 14 and 12 times greater risk than motorists, respectively, at signalized intersections.
Aside from exposure measures, this work also identifies some geometric design and built
environment characteristics affecting injury occurrence for cyclists, pedestrians and motorvehicle
occupants.

Jillian Strauss, Luis F. Miranda-Moreno, Patrick Morency