HL Deb 25 June 1999 vol 602 c115WA
Viscount Simon

asked Her Majesty's Government:

What is the estimated average annual reduction in road fatalities within the Metropolitan Police district attributable to the presence of Gatso cameras. [HL3151]

Lord Williams of Mostyn

The Commissioner of the Metropolitan Police tells me that those fatal collisions occurring at or near traffic camera sites are not recorded separately. However, the Police Research Group'sCost Benefit Analysis of Traffic Light and Speed Cameras, August 1996, showed that overall collision levels fell by 28 per cent at speed camera sites and 18 per cent at traffic light camera sites.