§ 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.