GRADE CROSSING ELIMINATION STRUCTURE Russian patent published in 2002 - IPC

FIELD: road building. SUBSTANCE: invention relates to grade crossing elimination structures and contains four design versions. According to one version, system has ring road, both at upper lower level in central section of structure with halves of main roads and entry roads being connected with outer circles of said ring roads. According to second design version, system has slab pavement road for right-hand and left-hand turns at upper and lower levels in central section of structure. Said slab pavement roads have semi-main roads and entry roads at edges, with minimum number of traffic lights installed on said slab pavement roads or on each entry road for automobiles running from all directions. According to third version, system consist of three roads with two ring roads at upper and lower levels, two halves of one main road and other main road entry roads and inclined sections. According to fourth version, system consists of two relatively intersecting main roads, each provided with diverging section for automobiles turning to the left or right, and converging section for flow of automobiles running in the same direction after execution of left-hand or right-hand turns. Invention provides system which can operate without traffic lights or with minimum number or traffic lights and, consequently, reduces to minimum frequency of change-over of traffic lights to prevent jams. In also requires minimum allotments for construction of grade crossing elimination structure. EFFECT: enlarged operating capabilities. 8 cl, 34 dwg