Vehicle Operating Speed on Urban Arterial Roadways [Project Brief]
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2019-01-01
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Corporate Contributors:Texas A&M Transportation Institute ; San Diego State University ; Virginia Tech Transportation Institute ; United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology
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Abstract:With mounting evidence of its health benefits, bicycling as a transportation mode has become increasingly popular in recent years. The greater number of bicyclists on urban/suburban streets may affect vehicle drivers’ speed selections. The hypothesis is that the roadway becomes safer for cyclists as their numbers increase and a greater number of cyclists are visible to motorists, making drivers more cautious about keeping sufficient lateral clearance and reducing speed. Identifying the amount of speed change as a function of the number of bicyclists could provide a better understanding of the potential for changes in bicyclist-vehicle crashes, including variations in crash severity levels. The primary goal of this research was to identify key contributing factors that influence vehicle operating speeds, including the presence of bicyclists on suburban arterials.
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