HC Deb 18 January 1967 vol 739 c73W
Mr. Lomas

asked the Minister of Transport if she will give the number of accidents and the percentage of the total of accidents where vehicles without adequate lighting were involved in each of the last five years.

Mr. John Morris

The information required could not be extracted without disproportionate effort, but an analysis made by the Road Research Laboratory has shown that in 1964 the proportion of all vehicles involved in fatal and serious accidents after darkness, where the police reported that defective or unlit lights may have contributed to the accident, is about 1 per cent.