Jim Cathey wrote:
Ah! I continue to learn. The sharp top cut off is to prevent
reflection back at the driver.
It also prevents glaring into the eyes of oncoming drivers. Of which
most fog lights (mandatorily lit?) on newer cars are very guilty of.
I don't think they have upwards cutoffs.
I'd say if they don't have upward cutoffs, they're not really fog
lights. "Driving lights" or "auxiliary low beams," maybe. Often the
goal of factory lights like that is to fill in that dark hole the
standard DOT pattern leaves just in front of the bumper.
