00203238

Component

http://onlinepubs.trb.org...s/hrr/1967/188/188-002.pdf

THE EFFECTS OF SELECTED ROADWAY AND OPERATIONAL CHARACTERISTICS UPON ACCIDENTS ON MULTILANE HIGHWAYS WERE INVESTIGATED. AN ATTEMPT WAS MADE TO DETERMINE IF CONTROL OF THESE CHARACTERISTICS, EITHER DURING DESIGN OR SUBSEQUENT MODIFICATION OF THE FACILITY, WOULD SIGNIFICANTLY AFFECT THE ACCIDENT RATE. FIELD DATA ON BOTH RURAL AND URBAN SECTIONS WERE COLLECTED FOR 92 MULTILANE HIGHWAY SITES IN NORTH CAROLINA. INFORMATION ON MORE THAN 6,000 ACCIDENTS WHICH OCCURRED ON THESE SITES DURING A 21-MONTH PERIOD IN 1963 AND 1964 WAS ANALYZED. ATTEMPTS WERE MADE TO CORRELATE EIGHT SELECTED SITE CHARACTERISTICS, SUCH AS ADT VOLUME, SPEED LIMIT, AND MEDIAN WIDTH, WITH ALL INJURY ACCIDENTS ON THE SITE. A MULTIPLE REGRESSION ANALYSIS WAS PERFORMED SO THE EFFECTS OF ALL OF THE SITE CHARACTERISTICS COULD BE EXAMINED SIMULTANEOUSLY. PREDICTION EQUATIONS, WHICH COULD BE USED TO MEASURE THE EFFECTS OF ANY NEW SET OF VARIABLES ON INJURY ACCIDENTS FOR A NEW SITE, WERE DEVELOPED. THE EFFECTS OF CERTAIN ROADWAY CHARACTERISTICS ON THE FREQUENCY OF MEDIAN- OPENING ACCIDENTS WERE ALSO INVESTIGATED. ALTHOUGH DIFFICULT TO QUANTIFY, KNOWLEDGE OF THE EFFECTS OF THE PHYSICAL FEATURES OF THE ROADWAY ON THE MEDIAN OPENING ACCIDENT RATE IS USEFUL TO THE HIGHWAY PLANNER DURING DECISION-MAKING AND POLICY-FORMULATION STAGES. /AUTHOR/

Paper sponsored by Committee on Operational Effects of Geometrics and presented at the 46th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01410138

pp 8-25

1967

Highway Research Record

Print

References (7) ; Tables (10)

Crash rates; Crossovers; Decision making; Design; Equations; Field studies; Highway planning; Location; Median openings; Medians; Multilane highways; Regression analysis; Rural areas; Urban areas

Building sites; Characteristics; Design features; Field data

Data and Information Technology; Design; Highways; Safety and Human Factors

TRIS, TRB

Nov 26 1994 12:00AM

• APPLICATION OF STATISTICAL CONCEPTS TO ACCIDENT DATA
• INTERSTATE SYSTEM ACCIDENT RESEARCH - STUDY II
• MEDIAN OPENINGS ON DIVIDED HIGHWAYS: THEIR EFFECT ON ACCIDENT RATES AND LEVEL OF SERVICE
• MOTOR VEHICLE ACCIDENT COSTS IN THE WASHINGTON METROPOLITAN AREA
• Motor-Vehicle Accident Rates as Related to Design Elements of Rural Highways
• MOTORCYCLE ACCIDENTS - AN EPIDEMIC
• SINGLE-VEHICLE ACCIDENTS ON ROUTE 66
• STATISTICAL ANALYSIS OF ACCIDENT DATA AS A BASIS FOR PLANNING SELECTIVE ENFORCEMENT
• Statistical Analysis of Accident Rates and Geometry of Highway
• SURVEILLANCE OF ACCIDENT LOCATIONS BY ELECTRONIC DATA PROCESSING METHODS