HC Deb 09 March 1993 vol 220 c469W
Mr. David Marshall

To ask the Secretary of State for Transport what has been the effect of the west London experiment with speed cameras in terms of savings in casualties and casualty costs.

Mr. Norris

Use of the cameras began on 15 October 1992; initial monitoring by the Transport Research Laboratory indicates that mean speeds have been reduced by more than 10 per cent. and that casualties also show a very encouraging downward trend. Monitoring will continue and it should be possible to give more information when statistically significant data are available.