A new 'intelligent' speed camera will be rolled out on UK roads within the next 18 months.
The cameras don't flash and can cover multiple lanes.
Speeding lorry drivers will also be targeted by the new cameras, due to the device's ability to distinguish between trucks and cars.
On many roads, lorries must adhere to lower speed limits, but convictions are difficult because current Gatso-type cameras do not differentiate between vehicles.
The cameras will initially be trialled in France, where, unlike the UK's familiar yellow cameras, the new devices will be styled to blend with other street furniture.
The Highways Agency has also revealed it is to spend £58 million on new digital cameras to monitor drivers using the hard shoulder on motorways.
