Quote:
Originally Posted by robotvoice
For those curious about the legality of having a rear fog, they are definitely 100% legal in the US. As long as the light shines red and is in the center or driver's side rear of the vehicle you will be fine. I've ran a rear fog light on 2 of my previous Subarus here in MD and VA and never got hassled.
There is also rear fog etiquette that a few people have mentioned in this thread as well. You should only be using this light in inclement weather to help drivers behind you gauge their distance from you. That's the only use for the light. It's not a 4th brake light. You already have 3 brake lights, you don't need 4. If you think you need a flashing "F1 style" 4th brake light on public streets because people behind you keep tailgating you and you are slamming on your brakes at every traffic light, you probably need to reevaluate your driving style instead.
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f1 brakes don't actually flash. the reason why they flash is because of the cameras recording them. ever point a video camera at a tv screen? more or less the same concept.