Citation

Cole BL, Jenkins SE. Aust. Road Res. 1982; 12(4): 223-238.

Affiliation

Univ of Melbourne, Parkville, Victoria, Aust

Copyright

(Copyright © 1982, Australian Road Research Board ARRB)

DOI

unavailable

PMID

unavailable

Abstract

This paper is concerned with obtaining: estimates of the conspicuity of traffic control devices seen in ordinary road environments, and an indication of the target object properties that determine conspicuity. The principal measure of conspicuity chosen was the probability of seeing a target object under defined conditions of fixation, observation time, and a second measure was in terms of the order in which the objects were first noticed. Experiments were conducted using projected color slides of 100 urban and semi-urban road scenes. It was found that traffic control devices were not conspicuous in the above terms. Size was an important determinant of conspicuity. Edge definition was also important. Brightness was less effective and white signs were noticed less frequently than colored ones.

Language: en