because racecar

>>15325779
To get you TRIGGERED

>>15325779
old french car had because of some law
in le mans it's to separate categories of cars GT have yellow light LMP have white ones

>>15325779
Cars have different lights depending on the class. GTE cars in Le Mans had yellow lights and Prototypes had white ones. So in the night, if a GTE class driver saw white lights in his mirror, he knew it was prototype.

It designates the racing class of the car when there are multiple classes racing at one time so you can tell what class of car is behind you.

The thought is that yellow doesn't reflect as much compared to a normal white light, so it's better for using in bad weather conditions.

>>15325807
This

Because the headlights are full of piss.

>>15325800

Beat me to it.

Because some brands of headlight fluid are yellow.

>>15325807
I've heard about this, is there any good evidence for it? Is it why people get yellow fog lights?

>>15328457

The intent of selective yellow is to improve vision by removing short, blue to violet wavelengths from the projected light. These wavelengths are difficult for the human visual system to process properly, and they cause perceived dazzle and glare effects in rain, fog and snow. Removing the blue-violet portion of a lamp's output to obtain selective yellow light can entail filter losses of around 15%, though the effect of this reduction is mitigated or countervailed by the increased visual acuity available with yellow rather than white light in bad weather.

>>15328582
Gee thanks Bill Nye.

>>15325779
Because my headlights are super fogged and fucked up. It's ok though because my straight pipe helps me see