Citation

Hauer E, Persaud BN. Transp. Res. Rec. 1984; 975: 36-43.

Copyright

(Copyright © 1984, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

Most agencies with responsibility for extensive road systems use some variant of the rate-and-number method to identify hazardous locations or blackspots. Sites so identified are later examined in detail to diagnose deficiencies and to suggest remedial measures. In this paper the degree to which the rate-and-number method is successful in identifying the unidentified, and what proportion of the sites that are subjected to detailed examination are not deviant at all, is examined. The first part of the paper is devoted to the analysis and development of the mathematical machinery. In the second part the use of the analytical results is illustrated by application to two data sets--one dealing with highway ramps in Ontario and the other with California drivers. The main result of this research is the facility to examine the performance of various identification procedures on the basis of measures of performance that are easy to understand. Such an examination should lead to a realistic assessment of what can be attained when identification for treatment is made on the basis of past accident history.

Language: en

Keywords

ROADS AND STREETS; HIGHWAY SYSTEMS; HIGHWAY ACCIDENTS; HIGHWAY ENGINEERING - Accident Prevention