Urban main road segment traffic turn-round control method

The invention discloses an urban main road segment traffic turn-round control method comprising the following six steps: road and traffic information is collected, the quantity of turn-round vehicles is determined, positions of lanes on which the turn-round vehicles are placed are determined, a road median strip opening solution is determined, and a signal control solution is determined. Based on a characteristic of large width of an urban main road, traffic demands of the turn-round vehicles and straight moving vehicles are taken into account while traffic operation features of the turn-round vehicles are fully considered; road segment space design parameters and the signal control solution are optimized, effects exerted on traffic efficiency of the straight moving vehicles by the turn-round vehicle can be reduced, and traffic capacity of a road segment can be improved. The urban main road segment traffic turn-round control method is strong in operability and practicality, and vehicles having turn-round need