[ssambros]

People who drove cars in the EU and in the USA: did you ever notice how the blind spot problem almost completely disappears in the EU? That's because US enforces in the Federal Motor Vehicle Safety Standard #111 [1] that the left side rear view mirror cannot be convex, to aid the detection of the vehicles in the blind spot. I have not yet come up with a good understanding of why that regulation even exists, but personally I feel much safer on the road with the European type rear view mirrors.

[1] 49 CFR 571.111 Rear visibility

S5.2 Outside rearview mirror - driver's side.

S5.2.1 Field of view. Each passenger car shall have an outside mirror of unit magnification [2].

[2] 'Unit magnification' mirror means a plane or flat mirror with a reflective surface through which the angular height and width of the image of an object is equal to the angular height and width of the object when viewed directly at the same distance except for flaws that do not exceed normal manufacturing tolerances.