We have a street here in Montreal called Guy Street.It goes up a hill under a CPR railway line.For years now 48 foot rigs pulled by semis have low bridged and have torn open the van roofs like opening a tin of sardines,or they've wedged the van underneath .They generally take air out of the tires and back down the hill.The problem has been that the overpass is higher on the downhill slope and shorter on the uphill portion.CPR have painted both ends in yellow and black striped paint with flashing lights and big black height numerals but the idiots are still getting crammed underneath.I think John McGillivray here in Montreal ,knows of this famous spot.
