`Fairer` road-side cameras that check motorists' average speed may replace fixed-point speed traps, Transport Secretary Geoff Hoon has implied.
He said the high-tech average-speed cameras are the way forward as they also encourage safer driving and cut fuel consumption.
Mr Hoon said that "spot" cameras, which measure speed at only one point, are seen as arbitrary and unfair. His remarks come just weeks after Swindon became the first town in the UK to scrap fixed-point cameras.
He added: "Spot-speed cameras are seen by some people as unfair because when you are driving along you perhaps don't notice your speed. What is interesting about average-speed cameras is that limits are largely observed by motorists.
"There is an area between my home and my constituency where they are widening the M1 and there are average-speed cameras. It reduces fuel consumption. By encouraging that smoother flow of traffic you are getting greater reliability."
The MP for Ashfield confessed to having been caught doing 42mph on a country road that at the time was a 30mph limit. He said the council raised the limit to 40mph on that road a few months later: "I still have a sense of resentment."
© Press Association 2008