Quote:
Originally Posted by freebeard
So you have 2" effective clearance and then you hit a bridge with a 1/2" lip at speed and the wheel deflects 2". Ground strike.
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The Interstate Highway System is designed for 100-mph travel. And the thermal expansion-joints in bridge sections are 'sliders,' and are 'flush', to the road surface, with no facility to translate vertically.
And because of a vehicle's own inertia, even if it were to strike some 1/2-inch hazard at speed, the 'body' of the car would essentially remain traveling 'level', while the wheels translated vertically over the rise.