Method for designing and signal-controlling waiting area of turn-around vehicles at outer side side auxiliary road ofintersection

Abstract

The invention relates to the technical field of intersection channelization design and signal control, and discloses a method for designing and signal-controlling a waiting area of turn-around vehicles at an outer side side auxiliary road of an intersection. The method comprises the following steps of: 1, collecting basic information of the intersection; 2, setting constraint conditions of the waiting area and determining a spatial position of the turn-around waiting area of the outer sideroad auxiliary; 3, determining an intersection signal timing design scheme; and 4, determining the lengthof the turn-around waiting area of the outer side auxiliary road. According to the method, under the condition that the surrounding land of the intersection does not need to be transformed, the passing requirements of the vehicles turning left on the inner side are met, the conflict between the vehicles turning left on the inner side and the vehicles turning around on the outer side is effectivelyeliminated, high efficiency, safety and smoothness of intersection operation are guaranteed, meanwhile, economy and practicability are remarkably improved, and the method has important practical significance.

Description

technical field [0001] The invention relates to the technical field of intersection channelization design and signal control, in particular to a method for designing a waiting area for U-turn vehicles on an auxiliary road outside an intersection and a method for signal control. Background technique [0002] my country's urban transportation system is dominated by motorized travel, but due to limited land use planning and actual space, urban road supply is difficult to meet the growing demand for motorized travel, directly causing traffic congestion, and accompanying environmental pollution and A series of problems that hinder the further development of the city, including traffic safety, have aroused widespread concern in the society. [0003] However, in the urban road traffic system, especially the separation of main and auxiliary roads with large physical size, the left-turn lane is divided into inner left-turn lane and outer left-turn lane, and the inner left-turn lane is...

AI Technical Summary

Problems solved by technology

However, using this method will increase the length of the intersection signal cycle, and the waiting time for vehicles in other phases will become longer, which will affect the overall traffic efficiency of the intersection; while the other part of the intersection will prohibit the passage of vehicles turning around on the outer side road. , to guide the vehicles that need to make a U-turn on the outer side road to turn left first, then turn around, and then turn right to achieve the purpose of making a U-turn on the outer side road

However, the setting of this method will inevitably increase the detour time of the outer U-turn vehicle, and at the same time cause a certain delay to the passage of vehicles in the adjacent direction

In addition, both the inner left-turn lane and the outer left-turn lane of the intersection can be used for the design of U-turn vehicles. The left-turn vehicles from the inner left-turn lane conflict with the U-turn vehicles in the outer left-turn lane, especially in the outer U-turn vehicle flow. When it is large, it is easy to cause traffic congestion at the conflict point, which seriously affects the operation efficiency of the traffic system and brings potential safety hazards

[0004] Based on the above-mentioned main and auxiliary road separation intersections, the defects of the inner left-end lane and the outer left-turn lane turning left at the same time, the inventor has developed a method for the design and signal control of the waiting area for U-turn vehicles on the outer side road at the intersection, which can well solve the problem. The above-mentioned inner left-end lane and outer left-turn lane have conflicts and congestion problems when turning left at the same time

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