most vehicles here the DRLs are actually the high beam headlights run at 70% power. even still they cause annoying glare at night because the high beams are focused higher than normal low beams. i would have thought that if a car uses the brights as DRLs they should also have a daylight sensor to automaticaly switch on the low beams when it gets dark, so you don't blind everyone else, but apparently not. our last 2008 toyota sienna (LE) didn't have that - it had high beams DRLs but no auto lights. our current 2008 toyota sienna (XLE) doesn't have DRLs at all but DOES have auto lights. go figure.