The report describes a project undertaken by TRL for the Highways Agency and designed to establish the speed-reducing performance of different traffic calming features appropriate to trunk road situations. Trials were carried out on the TRL driving simulator. Members of the public drove 'test routes' representing a journey, about 30 miles long, during which they encountered a number of features in different road environments. The measures comprised: established and innovative signing/marking measures at village gateways, at isolated developments and bends on rural roads, and for junctions and link sections on rural and urban roads. The relative effectiveness of the measures was established in each situation in terms of the observed reduction in speed, compared to an equivalent situation without measures. The results are being incorporated in Highways Agency guidance concerning traffic calming on trunk roads. (Author/publisher)
Abstract