HC Deb 28 November 1962 vol 668 c49W
62. Mr. Hopkins

asked the Minister of Transport whether he will now take more rigorous action to reduce the noxious fumes emitted from diesel lorries.

Mr. Hay

We are already taking energetic action in this field. A regulation against the misuse of the excess fuel devise on diesel engines is now in operation; special road checks have been held this year, and both these measures are having a good effect. Until exhaust measurement techniques can be improved we propose to continue with the present checks.