NHTSA specifically describes blind spots as areas alongside the vehicle that aren’t visible through the normal mirror arrangement or direct vision, and its mirror guidance is designed to maximize visibility in those areas.
And Then There Is the Blind Spot
This is where the whole issue stops being a quirky driving preference and becomes important.
Every car has areas that are harder to see.
You can have a perfectly adjusted mirror and still need to be aware of what’s around you.
NHTSA’s guidance emphasizes that mirrors don’t show everything and
