Laws in Canada, Denmark, Finland, Hungary, Iceland, Norway, and Sweden require vehicles to operate with lights on during the daytime. There are two types of laws. Canada's requires vehicles to be equipped with daytime running lights (DRLs). The other type of law (in effect in Denmark, Finland, Hungary, Iceland, Norway, and Sweden) requires motorists to turn on their headlights if their vehicles do not have automatic DRLs.
In 1972, Finland mandated daytime running lights in winter on rural roads and a decade later made DRLs mandatory year-round. Sweden's law took effect in 1977, Norway's in 1986, Iceland's in 1988, and Denmark's in 1990. Hungary has required drivers on rural roads to operate with vehicle lights on since 1993.