No, we don't move our heads. Our heads are all locked in halo braces. /sarc
Of course we move our heads. But damn, some of these blind spots are huge. At intersections that are not perfect 90 degrees, other stuff can also get in the way (fences, buildings, etc.) My little drawing shows one rural intersection I have to navigate every week. There's a double blind spot because of the curve of the road, and the bad building location. When it was a farm road 60 years ago, none of this mattered.
The point is, of course you have to move your head. But I have to move it A LOT, and even then, pull the vehicle forward and check a second time. There's just too much obscured.
As for the pedestrian problem, I think the other issue is people are sitting up in these huge SUVs and look over the peds.
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