Impacts of Intersection Treatments and Traffic Characteristics on Bicyclist Safety

This data provides observations and measurements used to answer questions of interest regarding how intersection and traffic characteristics impact the frequency and severity of bicycle-vehicle conflicts as part of the study titled “SPR 833 Intersection Treatments and Bicyclist Safety.” Data includes measurements from the field portion of the study used to assess post-encroachment time, hourly road user volumes, and conflict-involved road user speeds that were extracted from field-collected videos in Portland, Oregon. Also included are the measurements from the simulator portion of the study which gathered information relating to average velocity, lateral position, galvanic skin response, eye-tracking fixations, and survey data to describe bicyclist behavior on approach to different intersection geometries and configurations. The study focused on the impact of three intersection treatments which include a bike box, mixing zone, and bicycle signal intended to improve bicyclists safety at signalized intersections.