Traffic signal control method based on random fluctuation of traffic flow at adaptive intersection

Abstract

The invention provides a self-adaptive intersection traffic flow random fluctuation traffic signal control system and method. The system comprises a traffic flow detector, a data transmission sub-system, a data processing and control module, a lane signal lamp and a number of LED induction screens. The traffic flow detector acquires the arrival information of left turn and straight traffic flow of each entrance lane of an intersection in real time. The traffic flow detector transmits acquired traffic flow data to the data processing and control module through the data transmission sub-system. The data processing and control module carries out numerical calculation and logical judgment on the received traffic flow data. When left turn or straight saturated traffic flow of an entrance lane disappears, the data processing and control module immediately issues a control command through the data transmission sub-system to change the signal lamp color of the lane to end left turn or straight traffic flow release of the entrance. An LED induction screen is used to issue prompt information to guide waiting vehicles of other entrances to enter a stay area. According to the invention, the space-time resource utilization efficiency of the intersection is improved.

Description

technical field [0001] The invention relates to a traffic signal control system and method for adapting to the random fluctuation of traffic flow at an intersection. Background technique [0002] Due to the volatility and randomness of the arrival of opposite traffic flows, the fixed-phase scheme at signalized intersections often leads to unbalanced utilization of space-time resources at intersections, and idle space-time resources at some intersections, which restricts the improvement of traffic capacity at intersections. by figure 1 Take the intersection shown as an example for illustration. When the traffic volume of the east-west entrance in the east-west direction is greater than that of the west entrance, the space-time resources of the west entrance are often not fully utilized. That is, the lower half of the space) is basically idle, and the existing signal control technology cannot make the waiting vehicles at the south entrance enter the waiting area in advance, r...

AI Technical Summary

Problems solved by technology

[0002] Due to the volatility and randomness of the arrival of opposite traffic flow, the fixed phase scheme at signalized intersections often leads to unbalanced utilization of space-time resources at intersections, and idle space-time resources at some intersections, which restricts the improvement of traffic capacity at intersections.

by figure 1 Take the intersection shown as an example for illustration. When the traffic volume of the east-west entrance in the east-west direction is greater than that of the west entrance, the space-time resources of the west entrance are often not fully utilized. That is, the lower half of the space) is basically idle, and the existing signal control technology cannot make the waiting vehicles at the south entrance enter the waiting area in advance, resulting in the failure to fully utilize the space-time resources of the entire intersection

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