Citation

Graving JS, Tyrrell RA, Balk SA. Proc. Int. Driv. Symp. Hum. Factors Driv. Assess. Train. Veh. Des. 2009; 5: 377-383.

Copyright

(Copyright © 2009, University of Iowa Public Policy Center)

DOI

unavailable

PMID

unavailable

Abstract

Ten small patches of retroreflective material were evaluated using a method of magnitude estimation to quantify the effect of changing the coefficient of retroreflection (RA) on brightness perception. Seventeen undergraduates participated. The results show that brightness is tightly linked with RA. Brightness was influenced more by changes in lower RA than changes in higher RA and follows Steven’s power law for brightness. Practical and theoretical implications are discussed.