HL Deb 11 May 1993 vol 545 c63WA
Lord Stoddart of Swindon

asked Her Majesty's Government:

What proportions of particulates in urban air containing benzo(a)pyrene are produced by (a) petrol engine vehicles and (b) diesel engine vehicles.

Lord Strathclyde

Estimates of emissions of benzo(a)pyrene from road transport in Greater London in 1990 are as follows:

Low case kg High case kg
Petrol vehicles 48.4 121.0
Diesel vehicles 4.8 12.0
TOTAL 53.2 133.0