Suburbs and other residential areas could soon be littered with speed cameras in a bid to improve road safety and reduce pollution.
The road cameras detect the average speed a motorists does over a specific distance to find if the speed limit has been broken.
Drivers who slow briefly when passing the cameras will not escape a fine because their average speed can be calculated over any distance. This will, in turn, encourage motorists to drive more smoothly and burn less fuel.
The Association of Chief Police Officers (Acpo) has recommended Specs3 cameras be granted Government approval. Plans for devices include using them in built-up areas as alternatives to chicanes and road humps.
The decision follows a four-year assessment of the use of an earlier model at motorway and dual carriageway sites across Britain.
Manufacturer Speed Check Services said the cameras are cheaper and more effective than previous models and achieve "extremely high compliance rates".
A Transport for London (TfL) spokeswoman said several boroughs are interested in installing the new equipment.
Copyright © Press Association 2009