01333519

Component

This research investigated the contributing factors of injury severity of bicyclists in bicycle-motor vehicle crashes at unsignalized intersections. The crash data were extracted from Kentucky Collision Database maintained by Kentucky State Police between 2000 and 2009 and an ordered probit model was introduced to explore significant factors of bicycle safety. Injury Severity was classified into four categories: none and slight injured, non-incapacitating, incapacitating and fatal. Fifteen factors were incorporated in the model, describing bicyclist characteristics, driver characteristics, roadway characteristics and crash characteristics. The model estimates and marginal effects revealed that several factors were strongly associated with injury severity of bicyclists, including traffic control, number of lanes, driver age, bicyclist age, weather condition, light condition, roadway condition, and speed limit. Stop control, one-way traffic, young bicyclists, and low speed limits were found to make bicyclists safer, while no traffic control, two-lane approaches, old drivers, fogy and rainy weather, no lights, and icy roads were more likely to aggravate injury severity of bicyclists. Explanations of the results and some possible countermeasures were also discussed.

01329018

11-2363

English

13p

2011

Transportation Research Board 90th Annual Meeting

DVD

References (31) ; Tables (6)

Age groups; Bicycle crashes; Crash injuries; Crash severity; Fatalities; Injury severity; Speed; Traffic control; Traffic lanes; Unsignalized intersections; Weather

Bicycle safety

Kentucky

Highways; Pedestrians and Bicyclists; Safety and Human Factors; I82: Accidents and Transport Infrastructure

Transportation Research Board Annual Meeting 2011 Paper #11-2363

TRIS, TRB

Feb 17 2011 6:08PM