HC Deb 24 March 1994 vol 240 c361W
Mr. Robert Ainsworth

To ask the Secretary of State for Transport what percentage of traffic emission in central London he estimates comes from(a) buses, (b) licensed taxi cabs and (c) local authority service vehicles.

Mr. Norris

Figures on the performance of local authority service vehicles are not collected separately. For buses and taxis, we estimate the relative contributions to all central London traffic emissions to be as follows:

Buses per cent. Taxis per cent.
co2 14 11
CO 2 1
Hydrocarbons 7 5
NOx 19 3
Particulates 33 11

Note: Figures are approximate only, but have not been rounded so that comparisons may be made.