I think that in most countries by law driving lights must only be on when the lights are on high beam. This is a simple matter of wiring the driving lights switch to the high beam circuit. They should, of course be on a separate relay.
If they are fog lights they can be on when low beam is on but they should be aimed low and only used when there is fog. This is also governed by law in some countries. People running around with fog lights on when there is no fog should be fined as it is an annoying and dangerous practice.
Last edited by Gambalunga; 30/12/16 11:13 PM.