This report describes a methodology for measuring pedestrian and bicyclist exposure based on counts of pedestrian and bicyclist volumes as well as the distances that pedestrians and bicyclists travel on facilities shared with motor vehicles. The distances that pedestrians and bicyclists travel on these facilities represent a measure of their exposure to the risk of having a crash with a motor vehicle.
crash risk
Bike boxes and lanes may increase “right hook” crashes in some circumstances
A preliminary analysis of bike crashes at intersections in Portland with painted bike lanes, bike boxes, and bicycle-related signage has indicated that when placed on a downhill section of road, they may actually increase the number of bicycle/motor-vehicle crashes, especially during “stale” green lights.
Poor suffer more crash injuries; greater exposure to traffic, roadway geometry partly to blame
Many studies have shown the poor suffer more injuries and deaths from crashes than do wealthier residents of a city. A new study suggests that the major reason is that poor people are simply exposed to more traffic and more complex intersections in their neighborhoods.