§ 75. Mr. Sorensen
asked the Minister of Transport what further devices for the prevention of offensive exhaust from vehicles using heavy oil have been tested and proved effective; to what extent these are now being used; and what new regulations he is considering to enforce effective devices for preventing offensive exhaust on all new vehicles.
§ Mr. Marples
Tests have been made of various devices but none has been found sufficiently effective to justify making its use compulsory. A diesel engine need only make an occasional puff of light smoke if it is correctly adjusted and properly maintained. The law is clear in making it an offence for a vehicle to emit unnecessary smoke and we are continuing our roadside smoke checks which are aimed to bring home the importance of the matter to vehicle operators by the issue of prohibition notices for vehicles making excessive smoke.80W
therefore, have to be tackled in many ways. The general aims of our policy are to make roads and vehicles safer to use and to raise the standard of road behaviour.
Following is the information: