Daytime Running Lights Laws


Daytime running lights (DRL's) are headlights that automatically turn on when a vehicle's ignition is activated. As soon as normal headlights are turned on, the DRL's shut off. Daytime running light laws vary from country to country. These laws have altered over time. As of 2010, the United States does not require vehicles to be equipped with daytime running lights. However, some states do require drivers to turn their lights on during the day in poor weather conditions.


  • The purpose of daytime running light laws is to ensure the safety of all vehicles on the road, especially when driving conditions are poor. The use of daytime running lights allows all vehicles to be seen. Many car companies in the United States, such as General Motors, install daytime running lights on all of their vehicles.


Outside the United States

  • According to Business Week, Finland became the first country to mandate all vehicles have daytime running lights during winter weather. This law was passed in 1972. In Canada, daytime running lights are only required on vehicles manufactured after Dec. 1, 1989. Other areas of the world, including Denmark, Iceland and Hungary, also require daytime running lights.

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  • Photo Credit Steve Allen/Photodisc/Getty Images snow image by Brett Bouwer from three chromeplated headlights. image by Yuri Bizgaimer from o' canada image by Kathryn Palmer from
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