Effects of marker type, viewing angle and vehicle velocity on perception of traffic markers in a dynamic viewing situation. Paper presented at the 51st Annual Meeting of the Highway Research Board HRB, Washington, D.C., January 1972.

The effects of two types of "Stop" markers, nine angles of orientation, four vehicle velocities and their interactions were studied in a dynamic traffic situation. An analysis of variance proved the factors of marker type, viewing angle, and their interaction to be statistically significant, while the factor of vehicle velocity and other interactions proved not significant.