Incorrect. The regulations on car bumpers require that they be between 16" and 20" off the ground. The rear guard on a semi trailer must be no more than 22" off the ground. True, that’s not exactly lined up with a car bumper, but it’s enough to prevent underride crashes.

This is kind of far afield from my point, though, that what somebody else chooses to drive is my business, because they’re on the road with me. Pickup trucks are much, much more dangerous to me, because they’re much more likely to cause head and chest injuries to pedestrians and bicyclists, and much more likely to push them under the wheels instead of onto the hood. The traffic casualty rates in the past couple of years prove this empirically.