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Bicycle Safety Analysis: Crowdsourcing Bicycle Travel Data to Estimate Risk Exposure and Create Safety Performance Functions
Around 700 bicycle fatalities happen every year, and the number has steadily increased since 2009. At the same time Seattle, Wash., and Portland, Ore., are promoting cycling as a healthy transportation mode, so bicycle safety has become a more urgent concern for the Pacific Northwest area. The Highway Safety Manual provides ...
Safe Main Street Highways Part II: Analyses of Collisions Involving Pedestrians and Bicyclists in Washington State
This project contributes to the Washington State Strategic Highway Safety Plan, whose goals are to achieve zero road fatality and serious injury by 2030 and to reduce the number of pedestrians and bicyclists involved in motor-vehicle collisions on state highways. The study focused on “main street highways” (MSHs), which are ...
Identifying High-Risk Built Environments for Severe Bicycling Inuries
This study was aimed at filling part of the knowledge gap on bicycling safety in the built environment by addressing two questions. First, are built environment features and bicyclist injury severity correlated, and if so, what built environment factors most significantly relate to severe bicycling injuries? Second, do the ...
An Examination of the Impact of Commercial Parking Utilization on Cyclist Behavior in Urban Environments
There is little research on the behavioral interaction between bicycle lanes and commercial vehicle loading zones in the United States. These interactions are important to understand, to preempt increasing conflicts between truckers and bicyclists. In this study, a bicycling simulator experiment examined bicycle and truck ...
Improved Safety and Efficiency of Protected/Permitted Right Turns for Bicycles in the Pacific Northwest
Conflict between bicycles and right-turning vehicles on the approaches to intersections is a critical safety concern in urban environments. To understand the safety and operational implications of using protected-permitted right turns (PPRT), a full-scale bicycling simulator experiment was performed. The velocity and lateral ...
Guidelines for Pervious Concrete Sidewalks, Parking Lots, and Shared-Use Paths to Improve Driver, Biker, and Pedestrian Safety
The surface frictional properties of pervious concrete (PC) slabs were evaluated by using a British Pendulum Tester (BPT) with two different rubber sliders that represented driver and pedestrian users. The volumetric air content at the finished surface of the slabs was quantified by image analysis to identify any ...