HC Deb 31 March 1971 vol 814 c392W
151. Sir J. Langford-Holt

asked the Secretary of State for the Environment whether he will issue regulations requiring road vehicles of great length to be fitted with reflective surfaces at the rear and throughout their length, to indicate their length to overtaking motorists at night.

Mr. Eldon Griffiths

Existing regulations require vehicles over 8 metres long to carry side reflectors. From 1st November heavy vehicles must carry a reflective rear marking, those over 13 metres long displaying on it the words "Long Vehicle".