Abstract
The aim of the study was to develop an audible driver alerting device consisting of a series of areas of coarse textured surfacing. The specification for the length and spacing of the areas was developed by simulating in the laboratory the effects of driving over various patterns using a car simulator and recorded road noise. In the final simulator experiments subjects were asked to judge the various noise patterns using a variety of rating scales. The specification for the construction of the high noise surfaces was obtained by testing a number of different surfaces on the laboratory's test-track. (Author/publisher)