running lights on cars and trucks
We have driven the USA many, many times in good weather and bad, day and night. There is one thing that really bothers me while doing what I like ....rving. The thing is the lack of cars and trucks th...
Forum Discussion
Bumpyroad wrote:DrewE wrote:
. Low beam headlights are designed with a horizontal cutoff above which little light is produced, so as to avoid getting light (glare) into the eyes of oncoming drivers. DRLs, of course, are intended primarily to have exactly the opposite effect: they need to be visible to oncoming drivers but don't need to illuminate the roadway.
that doesn't make sense to me. oncoming vehicles with the low beams on are perfectly visible to me. don't want the glare of high beams even at a lower output.
bumpy
They just use the high beam bulb because it is a single filament. DRL mode is less bright than low beam.
