It is very easy to miss the speed limit sign while driving either because it has changed due to road works or an accident.

Whilst driving we are constantly watching the road ahead, watching for cars behind or checking for any hazards in the road so wouldn't it be easier if the car can tell you the speed?

Road Sign recognition is:

Car systems consists of a forward-facing camera, which scans the road ahead for traffic signs. This camera is connected to a character recognition software, which then makes a note of any changes described by the signs and relays it to the car’s instrument panel