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Comparing the effects of infrastructure on bicycling injury at intersections and non-intersections using a case–crossover design Harris, M. Anne; Reynolds, Conor; Winters, Meghan; Cripton, Peter Alec, 1965-; Shen, Hui; Chipman, Mary L.; Cusimano, Michael D.; Babul, Shelina; Brubacher, Jeffrey; Friedman, Steven M.; Hunte, Garth S.; Monro, Melody; Vernich, Lee; Teschke, Kay

Abstract

Background: This study examined the impact of transportation infrastructure at intersection and non-intersection locations on bicycling injury risk. Results: At intersections, the types of routes meeting and the intersection design influenced safety. Intersections of two local streets (no demarcated traffic lanes) had approximately one-fifth the risk (adjusted OR 0.19, 95% CI 0.05 to 0.66) of intersections of two major streets (more than two traffic lanes). Motor vehicle speeds less than 30 km/h also reduced risk (adjusted OR 0.52, 95% CI 0.29 to 0.92). Traffic circles (small roundabouts) on local streets increased the risk of these otherwise safe intersections (adjusted OR 7.98, 95% CI 1.79 to 35.6). At non-intersection locations, very low risks were found for cycle tracks (bike lanes physically separated from motor vehicle traffic; adjusted OR 0.05, 95% CI 0.01 to 0.59) and local streets with diverters that reduce motor vehicle traffic (adjusted OR 0.04, 95% CI 0.003 to 0.60). Downhill grades increased risks at both intersections and non-intersections. Conclusions: These results provide guidance for transportation planners and engineers: at local street intersections, traditional stops are safer than traffic circles, and at non-intersections, cycle tracks alongside major streets and traffic diversion from local streets are safer than no bicycle infrastructure.

Item Metadata

Title
Comparing the effects of infrastructure on bicycling injury at intersections and non-intersections using a case–crossover design
Creator
Harris, M. Anne; Reynolds, Conor; Winters, Meghan; Cripton, Peter Alec, 1965-; Shen, Hui; Chipman, Mary L.; Cusimano, Michael D.; Babul, Shelina; Brubacher, Jeffrey; Friedman, Steven M.; Hunte, Garth S.; Monro, Melody; Vernich, Lee; Teschke, Kay
Contributor
B.C. Injury Research and Prevention Unit
Publisher
Injury Prevention
Date Issued
2013-02-14
Description
Background: This study examined the impact of transportation infrastructure at intersection and non-intersection locations on bicycling injury risk. Results: At intersections, the types of routes meeting and the intersection design influenced safety. Intersections of two local streets (no demarcated traffic lanes) had approximately one-fifth the risk (adjusted OR 0.19, 95% CI 0.05 to 0.66) of intersections of two major streets (more than two traffic lanes). Motor vehicle speeds less than 30 km/h also reduced risk (adjusted OR 0.52, 95% CI 0.29 to 0.92). Traffic circles (small roundabouts) on local streets increased the risk of these otherwise safe intersections (adjusted OR 7.98, 95% CI 1.79 to 35.6). At non-intersection locations, very low risks were found for cycle tracks (bike lanes physically separated from motor vehicle traffic; adjusted OR 0.05, 95% CI 0.01 to 0.59) and local streets with diverters that reduce motor vehicle traffic (adjusted OR 0.04, 95% CI 0.003 to 0.60). Downhill grades increased risks at both intersections and non-intersections. Conclusions: These results provide guidance for transportation planners and engineers: at local street intersections, traditional stops are safer than traffic circles, and at non-intersections, cycle tracks alongside major streets and traffic diversion from local streets are safer than no bicycle infrastructure.
Subject
Adults (20-64); Injury policy and prevention; Road injury; Injury risks
Genre
Article
Type
Text
Language
eng
Date Available
2021-02-17
Provider
Vancouver : University of British Columbia Library
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International
DOI
10.14288/1.0395884
URI
http://hdl.handle.net/2429/77306
Affiliation
Applied Science, Faculty of; Arts, Faculty of; Medicine, Faculty of; Other UBC; Non UBC; Emergency Medicine, Department of; Liu Institute for Global Issues; Mechanical Engineering, Department of; Pediatrics, Department of; Population and Public Health (SPPH), School of
Citation
Harris MA, Reynolds CCO, Winters M, et al. Inj Prev 2013;19: 303–310.
Publisher DOI
10.1136/injuryprev-2012-040561
Peer Review Status
Reviewed
Scholarly Level
Faculty; Researcher
Rights URI
http://creativecommons.org/licenses/by-nc-nd/4.0/
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Attribution-NonCommercial-NoDerivatives 4.0 International