00771176

Component

https://doi.org/10.3141/1674-11

http://scholar.google.com...ttak&publication_year=1999

Concern over crashes involving bicycles and motor vehicles is largely due to the severity of injuries. The impacts of physical and environmental factors on the severity of injury to bicyclists are examined. North Carolina Highway Safety Information System crash and inventory data for state-controlled, two-lane, undivided roadways are analyzed. The injury severity distribution, measured on the KABCO scale, is as follows: no injury, 1.8%; complaint of pain, 24.4%; nonincapacitating injury, 42.5%; incapacitating injury, 25.5%; and fatal injury, 5.9%. The total number of involvements in this data set was 1,025, with a majority of the involvements occurring outside urbanized areas (80.5%). Using the ordered probit model, the effect of a set of roadway, environmental, and crash variables on injury severity is explored. Variables that significantly increase injury severity include straight grades, curved grades, darkness, fog, and speed limit. Higher average annual daily traffic, an interaction of speed limit and shoulder-width variables, and dark conditions with street lighting significantly lower injury severity. Separate models are estimated for rural and urban locations. Marginal effects of each factor on the likelihood of each injury-severity class are reported. Policy implications and possible countermeasures are then discussed.

This paper appears in Transportation Research Record No. 1674, Pedestrian and Bicycle Research 1999.

English

p. 78-85

1999

Transportation Research Record

0309070724

References (16) ; Tables (4)

Annual average daily traffic; Bicycle crashes; Countermeasures; Crash severity; Darkness; Fog; Highway curves; Highway grades; Policy; Probits; Road shoulders; Rural areas; Speed limits; Street lighting; Two lane highways; Urban areas; Width

North Carolina

Highways; Policy; Safety and Human Factors; I80: Accident Studies

TRIS, TRB, ATRI

Oct 15 1999 12:00AM

• ANALYSIS OF FACTORS CONTRIBUTING TO "WALKING ALONG ROADWAY" CRASHES
• DESTINATION AND MODE CHOICE MODELS FOR NONMOTORIZED TRAVEL
• DEVELOPMENT OF A COMPUTER SIMULATION MODEL OF MIXED MOTOR VEHICLE AND BICYCLE TRAFFIC ON AN URBAN ROAD NETWORK
• EFFECTS OF DRIVERS' AGE ON THE COMPREHENSION OF A PEDESTRIAN RIGHT-OF-WAY WARNING SIGN
• EVALUATION OF PEDESTRIAN WALKING SPEEDS IN AIRPORT TERMINALS
• FORECASTING BICYCLE AND PEDESTRIAN TRAVEL: STATE OF THE PRACTICE AND RESEARCH NEEDS
• IDENTIFYING GAPS IN CHILD PEDESTRIAN SAFETY: COMPARING WHAT CHILDREN DO WITH WHAT PARENTS TEACH
• PEDESTRIAN SAFETY IN DENMARK
• REVIEW OF BASIC RESEARCH IN BICYCLE TRAFFIC SCIENCE, TRAFFIC OPERATIONS, AND FACILITY DESIGN
• SITE DESIGN AND PEDESTRIAN TRAVEL
• STUDY OF BICYCLE LANES VERSUS WIDE CURB LANES
• USE OF ANIMATED "EYES" SO THAT MOTORISTS LEAVING AN INDOOR PARKING GARAGE LOOK FOR PEDESTRIANS
• USING LICENSE MANUALS TO INCREASE AWARENESS ABOUT PEDESTRIAN HAZARDS AT INTERSECTIONS: MISSED OPPORTUNITY FOR EDUCATING DRIVERS