As others have noted, Storrow & Memorial Drives in Boston have low clearances and they do, indeed, have rubber-bottomed signs suspended at the appropriate heights at the on-ramps. A few years ago I was walking over the spot where Mem Drive goes under Mass Ave and saw a speeding box-truck clock one of these hanging signs and disappear beneath my feet. I thought for half a second “they must exaggerate those signs a bit, since the truck made it” and then I heard a huge griding sound. A quick look from the other side of the road showed the truck firmly wedged in the underpass, with 3 starburst patterns on the windshield, where the passengers were taught a quick physics lesson (always wear your seatbelt, kids =). The cops were still trying to get the truck out several hours later when I was heading back the other way.

I’m pretty sure that the stigmatism part only comes after the tunnel.

“The bridge is too low, Max.”

“I asked you not to tell me that, 99.”

Come on, give the guy some slack, he’s gotta right to drive his truck wherever he wants. Look for the ACLU to weigh in on this one.

Maybe this IS a dry run.