HC Deb 25 July 1977 vol 936 cc93-4W
Mr. Stainton

asked the Secretary of State for Transport what have been the results of introducing at the beginning of 1977 into the annual test for roadworthiness of motor cycles a physical check of the silencer and exhaust system.

Mr. Horam

Owing to the way in which the sample statistics on failure in 1973 to£per tonne for a system 90 per cent. dependent on oil generation compared to 11 per cent in Great Britain; (b) the need to service the large capital investment at Kilroot at a time of very high interest rates,(c) the drop in demand from an annual increase of 9 per cent. in the 1960s to around 4 per cent. last year.