Re: So driver can see you better during bad weather, i.e. foggy night or heavy rain why..
only one, because if you have two bright light, driver behind you may think you are stepping your brake.[

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Certain vehicles, ie. Volvo, Jaguar, some Audis have 2 rear fog lights.
Mostly this is because of the switch from left hand drive to right hand drive in certain countries. By having 2 rear foglights, this will ensure that the foglight is always on the correct side of the lane with traffic.
Most people in NA that I have spoken to about my rear fog, think one of my brake lights are burnt out. I have hooked up both on my GTI. The more lights at the rear in the fog the less likely the car behind me will end up in my backseat[

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