Past research by the present authors (1951) has demonstrated that increasing the visibility of a vehicle at night decreases the time and difficulty for perception of a speed differential between two vehicles traveling in the same direction. Three of the criteria given by Luckiesh (1944), size, contrast and over-all illumination, were used as basic factors for varying the visibility. The contrast between the vehicle and background was varied by using materials with different reflection characteristics on the rear panel. The materials used reflected white light, but the availability of colored reflecting materials has made necessary this pilot study for the evaluation of the use of such materials for increasing the visibility of a vehicle at night. The data herein reported are part of a study on both color and pattern but time and space permit only presentation of the data on color here.
Proceedings of the Iowa Academy of Science
©1951 Iowa Academy of Science, Inc.
Hoppe, Donald A. and Lauer, A. R.
"Some Effects of Color on Perception of Relative Motion at Night,"
Proceedings of the Iowa Academy of Science, 58(1), 363-369.
Available at: https://scholarworks.uni.edu/pias/vol58/iss1/45