Motorway speeding cameras are to turn yellow by next October in a bid to improve road safety.
The government said all grey speed cameras will be painted yellow by October 2016 as part of a plan to make them easier to see and therefore avoid sudden breaking.
Transport secretary Patrick McLoughlin said: "I've always been clear that cameras should be visible and get used for safety rather than revenue raising."
He added: "This move is about applying common sense to our roads. Speed cameras should make journeys safer rather than lead to dangerous braking."
Grey digital cameras were first introduced as part of active traffic management on the M42 in 2006 and out of the 6,000 across the country, there are around 200 on the motorways.
Highways England will be monitoring its camera sites to address any impact the change in colour has for drivers.
Its chief executive Jim O’Sullivan said: "We also are on the side of common sense, and aim to provide a good service to road users. While we understand speed cameras are not popular, they play a valuable role in enhancing safety, smoothing traffic flow and reducing congestion for millions of motorists who use our roads. We use cameras for safety and traffic management only when other more popular solutions like engineering are not adequate to tackle particular problems on our network."