Triplethreat said "A truck, it has to have outside mirrors of a certain size. If you are driving a vehicle with small mirrors or only a driver's side mirror, you can't block off your rear window. A dirty window would be considered obstructed. "
attach a link to your assumption?? The mirrors on my suburban are the same size as a 3/4t truck and only slightly bigger than my sons G5 car.
I agree with the passenger side mirror....but your idea of mirror size is not factual unless you can support it with something based out of the HTA.