Citation

McMonagle JC. Highw. Res. Board bull. 1951; 30: 29-41.

Copyright

(Copyright © 1951, National Research Council (U.S.A.), Highway Research Board)

DOI

unavailable

PMID

unavailable

Abstract

An accident analysis was conducted to measure the relationship or association that exists between accidents and highway design and roadside features. A 70-mile strip of road called telegraph road was selected for the analysis. Statistical analysis of the data obtained were proceeded by two methods. One tabulated frequency distributions of accidents by distance of occurence from each specific feature. From these distributions cumulative percentages within various distances and rate curves were computed. The other approach calculated correlation coefficients between the number of accidents and the number of various roadside and design features. A detailed analysis is presented of conclusions obtained from the two statistical techniques empoyed. Intersections lead all other features with 55% of the accidents occurring at the feature and by the criterion of the cumulative percentage intersections are definitely the most hazardous feature in the study. Gas stations are next with 38% of the accidents occurring at zero distance and the distribution pattern is similar to that for intersections.