A question for those of you who have daytime running lights (those of you who have their's turned on, or live in Canada or Europe).

When is the daytime running lights are on, are they still on when the headlights are on, or do they turn off when the head lights are turned on?
Ben

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Silver Honda Accord, 2006
Silver G500, 2003
Silver SLK-320, 2002
Black ML-320, 2000
Bule Porsche 993 Targa , 1997
Silver Merkur XR4Ti, 1987