Happened to have my rear fog lights on and got out of the car and realized my right one was out. Took the cover off inside and found a blank where the light should be. Is this normal or did someone screw up?
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That's sort of the logic behind the single rear fog light - to stick out to drivers behind you.I generally use them when driving in heavy rain/snow or heavy fog, just didn't realize there was only one. My brain that likes symmetry starts to tweak a little when I only see one light.
I guess that would make some sense, but I've never seen this formally stated anywhere...That's sort of the logic behind the single rear fog light - to stick out to drivers behind you.
And it's only the US. In Europe the cars have fog lights both taillights - you can see how US bound cars are modified. I think it's a NHTSA rule.I guess that would make some sense, but I've never seen this formally stated anywhere...
And, as is inferred above, it's not just Volvo that has the single bright "fog light" on the left rear side...
Not so sure about that. This goes back several years but during my 6 years living in France in the 1980's, the Peugeots and German Fords I drove all had single fog lights in the rear. That dual side set-up with a plug for one side may be there to meet specs for right hand drive cars.And it's only the US. In Europe the cars have fog lights both taillights - you can see how US bound cars are modified. I think it's a NHTSA rule.
Uhm no. I live in Sweden and both my current V90 and my previous V50 had only ONE rear foglight. Same goes for many other brands over here. I've seen more cars with one foglight in the rear rather than two, that's for sure.And it's only the US. In Europe the cars have fog lights both taillights - you can see how US bound cars are modified. I think it's a NHTSA rule.
You're right - it was the UN.I don't think the NHTSA says anything about rear facing foglights.
My memory for the EU is that the requirement is that cars be equipped with at least one rear facing foglight on the driver's side of the vehicle, and that that light is a dedicated foglight.
So, some manufacturers build with just the one light and vary which side based on whether the car is LHD or RHD. Others just include two lights (some Audis, some Toyotas) to cover their bases.
Perhaps. I think the rear fog light helps mark the drivers side/position in poor visibility. Tomato/Tomato
It's still effective when someone is tailgating youThe main reason manufacturers choose to only install one instead of two fog lights is to make sure the lights aren't confused with brake lights.
Back in the day (when filament bulbs were the norm), brake lights and rear fogs both required 21w bulbs, so they would have the same light output as well as the same color.
Additionally, Europe didn't mandate CHMSLs (3rd brake lights) until 1996, and you can see why a manufacturer would avoid placing two additional red lights on the rear of a car that could be switched on permanently.
These days, the risk of confusion is a little less pronounced but given the intensity of the light, still present. And since it's only meant to alert other drivers that someone is driving in front of them, one light is simply sufficient to fulfill that purpose.