Citation

Forbes TW. Hum. Factors 1964; 6(4): 371-374.

Copyright

(Copyright © 1964, Human Factors and Ergonomics Society, Publisher SAGE Publishing)

DOI

10.1177/001872086400600409

PMID

unavailable

Abstract

This report describes an experimental procedure being developed for measuring the probability that a highway traffic sign of given brightness, color, and contrast characteristics can be seen against various day and night background conditions. From the laboratory measurements with this technique, probabilities that a sign will be seen can be determined. Later, field checks with full-scale observations are made to validate the laboratory results.

Language: en