SEPARATE GRADE CROSSING OF MOSCOW RING HIGHWAY AND SHOSSE ENTUZIASTOV AND GORKOVSKOYE SHOSSE Russian patent published in 1999 - IPC

FIELD: road-building industry. SUBSTANCE: invention relates to actual separate grade crossing but it can be used in building and reconstruction of separate grade crossings of highways primarily in urban conditions. Separate grade crossing comprises crossing upper-lying and lower-lying motor roads and underpass in upper-lying motor road in center of crossing. Four sectors are created in plan by crossing. Located in each sector is curvilinear loop-like departure ramp which adjoins intercrossing motor roads. Crossing is provided with left-turn directed departure ramp from upper-lying motor road to lower-lying motor road. At least part of departure ramp is made in the form of overpass of variable curvature in plan and in profile at least in axial line of departure ramp. Right-turn departure ramp and left-turn directed departure ramp are made with common zone of diverging. Left-turn directed departure ramp successively passes above upper-lying motor road, lower-lying motor road, and right-turn departure ramp from upper-lying motor road to lower-lying motor road in sector of adjoining left-turn directed departure ramp to lower-lying motor road. Left-turn directed departure ramp is made with outer angle of entering in plan created by projection of tangent drawn to axial line of departure ramp at point of its crossing with line of outer edge of above-lying motor road. Angle is equal to α₁= (31-37^°), and with outer angle of leaving created in plan by projection of tangent drawn to axial line of departure ramp at point of its crossing with outer edge of upper-lying motor road. This line is second as to direction of traffic flow. Angle is equal to α₂= (47-56^°). Application of aforesaid arrangement allows for redistribution of traffic flows, preventing traffic congestions on motor roads, increasing traffic capacity with ensuring safety travel. EFFECT: higher efficiency. 7 cl, 6 dwg