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A busy crossroads where north-south traffic crosses without stopping. East-west traffic is accelerated via conveyor belts to fly above the north-south traffic like the General Lee. turning left or right is a problem,so detours are required. A sort of power-assisted flyover
The General Lee
. [Sir_Misspeller, Jan 13 2009]
||[+] on general principles but how is this superior to a bridge ?
||//how is this superior to a bridge ?//
A bridge could collapse, and that would be dangerous.
||One could adapt this same principle to address problem potholes by simply erecting ramps in front of them.