HC Deb 16 November 1981 vol 13 c37W
Sir Timothy Kitson

asked the Secretary of State for Transport if he will take steps to require the fixing of mudguards and flaps to all vehicles travelling on motorways in order to improve visibility for following vehicles.

Mr. Kenneth Clarke

The law already requires heavy vehicles to be so designed that any water or mud thrown up by the wheels is caught as far as practicable by the vehicle wing or body. But designers have yet to find a really effective way of reducing spray. Research is continuing, however, and I will certainly take action once an effective method is found.