On Sun, 18 Sep 2005 15:31:23 -0400, "Daniel J. Stern"
Two pinneedles of light stand out less than two standard thick beams unless they shine right into your eyes, like a laser pointer that only causes pain when it catches you full on. I found a photo that shows what I mean. The parking lights are actually brighter than the mains when seen indirectly.
"Used to" means what I normally see, which is a lot more standard beams. If a car with projector lights is partially hidden or there's congestion it's not as obvious what you're looking at. I've seen auxiliary lights on campers and trucks that look brighter from an angle than projector lights.
Rainstorm. Low visibility. Tiny headlights. Harder to see oncoming cars with them. Harder to see them in normal conditions, too. Not impossible, just not as bright or "fat" from the viewing perspective.
It's the same thing I was describing above with that photo. Standard lights and reflectors create a uniform "fat" area you can see easier in the distance. There is a glare effect that makes the light less directional and the beam looks more robust at the front end of the car. If they made one out of ten STOP signs only half size they'd be harder to see as well.
Kurt
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