Driver error rather than rider error is a major factor in powered two-wheeler (PTW) accidents. Although increasing the physical conspicuity of the PTW or rider has often been considered as the only necessary countermeasure, studies show that driver error is often the result of decisions made after detection of the PTW has taken place. This imposes the need to consider other aspects of the PTW, in addition to lack of conspicuity, which can lead to inappropriate driver behaviour. This paper therefore discusses technological, physical and design aspects of PTWs in relation to their potential accident-causing effects within a mixed traffic stream. Despite the need to consider different interpretations of driver error and several aspects of PTW operation, a unifying feature is the need for greater driver 'technical' awareness of PTWs. Empirical investigations of the nature and importance of drivers lack of Technical Awareness are reported, based on surveys of the opinions, knowledge and experience of drivers in Britain.
Abstract