A Single Intersection Signal Timing Method Based on Complete Information Static Game

Abstract

The invention relates to a single-intersection signal timing method based on a complete information static game. The method is characterized by comprising the steps as follows: 1) setting an initial timing scheme of each phase in an intersection; 2) establishing the vehicle priority to obtain an equivalent queuing length statistical basis of a vehicle queue; 3) calculating the maximum queuing length and the minimum queuing length of each phase during green time; 4) obtaining an average queuing length of each phase in a signal cycle according to the initial timing scheme as well as the maximumqueuing length and the minimum queuing length of each phase during the green time; 5) obtaining the effective green time allocated to each phase in the signal cycle with the complete information static game method; 6) correcting and adjusting the effective green time allocated to each phase in the signal cycle to obtain a timing scheme of each phase in the signal cycle; 7) repeating steps 3)-6) toupdate the timing schemes to obtain the timing scheme of each phase in each signal cycle. The method can be widely applied to the field of road traffic signal control.

Description

technical field [0001] The invention relates to a single intersection signal timing method, in particular to a single intersection signal timing method based on a complete information static game, belonging to the field of road traffic signal control. Background technique [0002] Road intersection refers to the intersection of two or more roads, as the necessary place for vehicles and pedestrians to gather, turn and evacuate. Road intersection is a natural bottleneck that causes traffic interruption and delay in the traffic network. Capacity is the key to determine the traffic efficiency of the traffic network. Therefore, in order to improve the road traffic capacity and improve the intersection traffic conditions, it is necessary to optimize the signal timing of road intersections. [0003] At present, the most common signal control method for signal timing at road intersections is single-point fixed-period signal control. The timing signal timing methods in China mainly i...

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Problems solved by technology

[0003] At present, the most common signal control method for signal timing at road intersections is single-point fixed-period signal control. The timing signal timing methods in China mainly include stop line method and conflict point method. In addition, there is also British WEBSTER ( Webster) method, Australia's ARRB (Australian Road Research Bureau) method and the United States' HCM (American Road Capacity Manual) method, etc., these methods all focus on the minimum parking delay as the objective function, and the flow ratio of each phase as the main Parameters are used to determine the optimal period length, which has the following disadvantages: 1) After determining the signal period, the effective green time distribution of each phase lacks a theoretical basis, which is similar to the proportional distribution of the flow ratio of each phase; 2) only considers the lanes in each phase 3) The timing effect is not ideal under high traffic ratio conditions; 4) Although the goal is to minimize the total delay at the intersection, the timing results often delay the actual vehicles more than acceptable

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