Daytime running lights (DRL)
What is DRL?
Not having seen the other road user too late, or not at all, plays a part in many crashes. The European Commission (EC) considers making daytime running lights (DRL) compulsory to increase visibility of road users, and thus reduce the chance of a crash. In the Netherlands many car drivers already use DRL voluntarily; practically all motorcyclists have their lights on during the day. DRL causes a greater contrast between vehicles and their surroundings; this increases the visibility of vehicles and makes them better identifiable; moreover vehicles with DRL are estimated to be closer than they really are. This explains why less risk is taken while overtaking and when crossing intersections.
For more details: Fact sheet Daytime Running Lights (DRL) (pdf)
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