Intersection design and powered two wheelers interaction: experimental investigation of an accident prediction model

Powered two wheelers (PTW) differ in their use of the road from other vehicles and they have different needs; predictable road geometry, good visibility, high quality road surface, while important for all road users, are essential for PTW. In order to increase road safety, the European Commission has recently introduced a comprehensive system of infrastructure safety management (Directive Proposal 5 October 2006). Significant improvements in safety, particularly as it relates to the road infrastructure, can only be achieved if vulnerable modes such as PTWs are ‘mainstreamed’ in safety management and road design, with their benefits of use (particularly in traffic-congested urban environments) included as part of the wider transport policy. From this statement, the aim of this paper is the validation, for Italian roads, of a previous model in order to address the intersection geometric features on the prediction of the motorcyclist safety, using traffic and accident data collected on site.