Citation

Belmont DM. Highw. Res. Board bull. 1954; 91: 29-32.

Copyright

(Copyright © 1954, National Research Council (U.S.A.), Highway Research Board)

DOI

unavailable

PMID

unavailable

Abstract

California accident records for 1948 were examined for the relation between shoulder width and accident occurrence on two-lane tangents. For similar traffic volumes, shoulders 6 feet wide were safer than narrower shoulders and, also, (at volumes over 5,000 vehicles per day) safer than wider shoulders.