HC Deb 04 March 1993 vol 220 c235W
Mrs. Dunwoody

To ask the Secretary of State for Transport what percentage of(a) carbon monoxide, (b) nitrogen oxides and (c) volatile organic compounds are from road traffic; and if he will make a statement.

Mr. Maclean

I have been asked to reply.

The contribution from road traffic to national emissions in 1990 was:

Per cent.
Carbon monoxide 90
Nitrogen oxides 51
Volatile organic compounds 41

Over the next few years tight new emission standards are coming into force for cars, lorries and buses and these will lead to better air quality as older vehicles are phased out.