ABSTRACT
Engineering initiatives on the roads have had mixed effects. Some have perhaps addressed incorrect assumptions about the information-processing necessary for driving. Thus, initiatives directed at conspicuity —for example, high-intensity fog lamps and retroreflective material-do not address the nature of human perception of space and motion and so are unlikely to have much effect (Reinhardt-Rutland, 1992). Other initiatives seem to have been a success, at least in the vicinity of their application. The obvious example here is traffic-calming-the installation of road-humps and chicanes (Davis and Coffman, 2001).
