Red Advantage ?

[ahecht]

Yes, it is true, your eyes suck at blue. Just see this website.

Originally Posted by Viper37

Indeed, blue is the least visable color on the spectrum I believe.

Why they use it for "high end" car headlights, I have no idea.

HID headlights are actually white, not blue. There are two reasons for the misconception that they are blue:

a) Incandescent headlights (like all incandescent lights) are very yellow, so white HID lights look blue by comparison. Anyone who has ever taken a picture indoors with a camera lacking auto-white balance has seen this effect first hand.

b) HID headlights, like all headlights, are designed not to shine into the eyes of oncoming drivers though a series of reflectors and light blocking surfaces. Due to chromatic aberration, when the lights are viewed from off center (as you would always view them unless they are shining right on you), these refletors and blocking surfaces make the light appear bluish.