Patent ID: 8500359

Claim:
A nonstop traffic system using a cloverleaf, comprising: a first roadway providing a go straight; a second roadway providing a go straight in a direction perpendicular to the first roadway, with a half cloverleaf provided at a cross point where the first roadway and the second roadway cross with each other, said half cloverleaf comprising a half overpass providing a go straight in two directions on the first roadway; a half underground roadway provided below the half overpass and providing a go straight in two directions on the second roadway; a pair of half underground-turn roadways provided below the half overpass and providing a U-turn to the opposite lane of the first roadway before the vehicle goes on the first roadway and enters the second roadway; and a half aboveground cross overpass provided below the half overpass and between the pair of the half underground U-turn roadways and allowing a pedestrian on the second roadway to walk on the opposite lane after crossing the second roadway, and said first roadway forms half underground U-turn roadways ( 200 S, 200 N) at an interval from the half cloverleaf, and said half underground U-turn roadways ( 200 S, 200 N) each comprising: a half overpass providing a go straight in two directions on the first roadway; a half underground U-turn roadway provided below the half overpass and providing a U-turn to the opposite lane of the first road when a vehicle goes on the first roadway; and a half underground cross roadway provided below the half overpass and in vicinity of the half underground U-turn roadway and providing a crossing below the half overpass; and said second roadway has half underground U-turn roadways ( 200 E, 200 W) at an interval from the half cloverleaf, and said half underground U-turn roadways ( 200 E, 200 W) each comprising: a half overpass providing a go straight in two directions on the second roadway; a half underground U-turn roadway provided below the half overpass and providing a U-turn to the opposite lane of the second road when a vehicle goes on the second roadway; and a half underground cross roadway provided below the half overpass and in vicinity of the half underground U-turn roadway and providing a crossing below the half overpass.