i thought that was illegal and not recommended unless you are about to become a road hazard.

why not install rear fogs for like under $10?


Use hazard lights only when needed

Many drivers use hazard lights wrongly, switching them on to show other drivers that road conditions are hazardous. Most do this because the drivers ahead are doing it. This is a mistake, because hazard lights can be very distracting and cause glare that limits your vision and confuses drivers ahead and behind you. Only use hazard lights to warn other drivers that your vehicle is, or is about to become, a road hazard – engine is overheating, brakes are faulty, or your wipers are defective – and that you are slowing down to stop. You should also use it when you are in an emergency – feeling sick or rushing someone to a hospital – or when the car ahead of you has an accident and you want to warn other cars behind you. Otherwise, don’t add to the confusion.


http://www.nhtsa.dot.gov/portal/site...wType=standard

Used for DISABLED VEHICLES only