Citation

Loutzenheiser DW, Haile ER. Highw. Res. Board bull. 1958; 195: 4-8.

Copyright

(Copyright © 1958, National Research Council (U.S.A.), Highway Research Board)

DOI

unavailable

PMID

unavailable

Abstract

While there is a downward trend in the total height and resulting level of driver's eye for passenger cars, its results on the sight distance over crests does not appear to be significant enough to warrant change in presently used design methods and standards. Current passenger car models have driver eye height that reduces crest sight distance by somewhat under 5 percent and the likely lowest future range may reduce the sight distance upwards of 10 percent. These percentages are unimportant considering the variables upon which current design formula are based.