Drivers will be able to legally let go of their steering wheels for the first time on British roads after Ford introduced a hands-free system to its electric cars.

The Department for Transport has approved the American giant’s “BlueCruise” system, which automatically adjusts speed, steers round corners and brakes while driving on motorways – although the car will warn drivers if they take their eyes off the road, and overtaking is not permitted.

BlueCruise will only work on motorways in England, Wales and Scotland, using location sensors to register when the vehicle is on approved roads.

Once enabled, the system will drive at speeds of up to 70mph, using radar and cameras to adjust speed and change position in a driving lane.