Drivers and Road Signs: A Preliminary Investigation of the Capacity of Car Drivers to get Information from Road Signs

Abstract

It was found that the mean percentage of road signs recorded by five subjects over the course of a 105 miles long car journey under optimal conditions was of the order of 90 per cent of signs passed.

It was found that the mean percentage of drivers recording a road sign was 47 per cent of those passed it. (This figure is based on percentages obtained for five different road signs, the number of drivers involved being about 1000.). On analysing the data for these five signs, it was found that there was a significant difference between the percentage of drivers recording each one. This difference was postulated as being due to the degree of urgency of the information contained in each sign (as based on past experience), i.e. the more urgent the information, the higher the percentage of drivers recording the sign.

Additional information

Notes on contributors

K[Adot]RE RUMAR

The research was carried out by a team from the Department of Psychology, University of Uppsala. Other members of the team sharing the responsibility were S. S. Bergstrdm, G. Jansson, C. Ottander and G. Ornberg. The investigation was made possible by a grant from the Swedish State Traffic Safety Board and valuable co-operation from the Swedish State Highway Patrol.