This paper presents a sub-set of the findings derived from an on-road study of driving errors, the main aim of which was to investigate the role of wider road system failures in driving error causation. 25 participants drove a pre-determined route in an instrumented vehicle. In-vehicle observers recorded the different errors made, and a range of other data was collected, including driver verbal protocols, forward, cockpit and driver video, and vehicle data (speed, braking, steering wheel angle, lane tracking etc). Participants also completed a post trial cognitive task analysis interview. In conclusion, participants were found to make a range of driving errors, with speeding violations being the most common. In-depth analysis of a sub-set of representative errors indicates that driving errors have various causes, including failures in the wider road ‘system’ such as inappropriate or poor road environment design and unclear road rules and regulations. (Author/publisher)
Abstract