The safety of urban cycle tracks: A review of the literature
- Published: Accident Analysis & Prevention Volume 52, 28 March 2013, 2013
- Authors: B. Thomas & M. DeRobertis
- Date Added: 28 Aug 2016
- Last Update: 31 Oct 2016
Objectives
To examine studies of cycle tracks from different countries in order to identify the safety of these facilities relative to cycling on roads.
Methodology
A literature review of 22 papers from Northern Europe and one from Canada, all dating from 1987.
Key Findings:
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One way cycle tracks are generally safer at intersections than two way cycle tracks.
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When effective intersection treatments are employed, constructing cycle tracks on busy roads can reduce collisions and injuries.
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When there is a control of exposure and all collision types are included, one way cycle tracks reduce the severity of injuries even if no intersection treatments are implemented.
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Intersection treatments that appear to be effective in improving safety are:
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Having the cycle track closer to the adjacent road traffic on the approach to the intersection to increase the visibility of cyclists to motorists;
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Having advance stop lines for motorised traffic at least 20m back from the entrance of the junction;
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At side road crossings and locations where cyclists might be travelling straight with vehicles turning across the path of a cycle track, cycle crossings should be raised, effectively providing a speed bump that reduces vehicle turning speeds and therefore lowers the severity of potential injuries to cyclists;
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Having cycle signals to formally separate the movements of cyclists going straight ahead and motor vehicles turning.
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The safety benefit of coloured cycle crossings is less conclusive. Some studies suggested that they improve safety, but only when used on one arm of a four arm intersection. When used on multiple arms they become less prominent to drivers.
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The literature reviewed failed to address injury severity and also take account of how exposure affects risk.
Themes
Cycle infrastructure, safety, cycle tracks, intersections, junctions
Comments
A review of studies looking at the safety of different intersection treatments.
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