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Over Under Snapable Highway

This section will snap together to make a perfect grid. Use of a mod to change the traffic lights can speed up the traffic flow. When building many sections you might want to change the highway on and off ramps to remove excess roads. (using a normal 2 way round that connects to both ramps)

You can also run an elevated roadway at the junction of the ramp to the overpass to allow non highway local access.

With the advent of the new traffic control mods my older roundabouts can be replaced with this design by removing the street lights or timing them.