Motorway light signals
Motorway light signals are used on motorways to warn traffic of any dangers ahead or changes on the motorway such as roadworks or speed limit changes. Due to the high speed of motorways, light signals are used to provide drivers with sufficient warning of any dangers or hazards ahead.
Looking well ahead to spot motorway signals is important to take action at the earliest possible stage.
An example of possible dangers could be a traffic accident, reduced visibility due to fog, road works, traffic delays, temporary speed limits imposed and lane change signals.