Comment Re:There would be no need... (Score 1) 337
That's an odd question because how do you know there is a change? People who travel the same road day in/day out get to know the speeds of their routes and stop looking at the street signs. Yet when there are road works or a change in signage they can see the sign or watch the traffic around and see the speed has changed. Surely automated cars will get cameras that can do the same.