HC Deb 19 December 1983 vol 51 c2W
Mr. Sheerman

asked the Secretary of State for Transport if he has any plans to monitor the effectiveness of the use of recommended conspicuity aids by the large-scale in-depth study of accidents.

Mrs. Chalker

The transport and road research laboratory has undertaken a number of studies into the effectiveness of different types of conspicuity aids. in recent years. These studies have used a variety of research techniques, including the analysis of evidence drawn from accident reports. This work will continue, but there is no current plan to mount a large scale study of accidents specifically on this problem.