Abstract
A total of 247 accidents was investigated and it was found that vehicle factors and road factors each occurred in one quarter of the accidents, and that road user factors occurred in three quarters. Loss of control occurred in 40% of the accidents. Vehicle defects were sufficiently common to suggest that these factors should be studied further. The features of some of the main accident black spots were studied and remedial measures have been suggested. The results reinforce the need for research into the conspicuity of vehicles to pedestrians, the optimum placing of traffic sign on the approach to hazards, and the potentially dangerous movements of pedestrians.