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
-- giligamesh, Jan 13 2009

The General Lee http://www.generalleeone.com/
. [Sir_Misspeller, Jan 13 2009]

[+] on general principles but how is this superior to a bridge ?
-- FlyingToaster, Jan 13 2009


//how is this superior to a bridge ?//
A bridge could collapse, and that would be dangerous.
-- coprocephalous, Jan 13 2009


One could adapt this same principle to address problem potholes by simply erecting ramps in front of them.
-- bungston, Jan 14 2009



random, halfbakery