A Variable Lane Signal Control Method Based on Multiple Traffic Indicators

Abstract

A variable lane signal control method based on multiple traffic indicators. By acquiring real-time traffic data and signal control data, the traffic characteristic data of the queue length at the start time of the green light, the queue length at the end time of the green light, the duration of the green light and the saturation during the green light period are obtained. , when the obtained traffic feature data reach their respective threshold conditions at the same time and the switching interval of the variable lane guidance attribute meets the specified interval length, the variable lane guidance triggers the switching request signal, and evaluates the effect of the variable lane guidance attribute switching on the traffic flow before and after the switch Based on the influence of the driving pressure, it is judged whether to switch the variable lane guidance attribute. By applying the present invention, it is possible to avoid the fact that a single indicator cannot accurately reflect the real traffic adjustment requirements, to evaluate the impact of lane guidance adjustment on traffic flow operation in advance, to support manual and automatic switching of lane guidance attributes, to better fit the actual traffic operation rules, and to improve the traffic flow at intersections. Lane operation efficiency, reducing the risk of overflow and confusion caused by queuing.

Description

technical field [0001] The invention relates to the technical field of traffic information, in particular to a variable lane signal control method based on multiple traffic indicators. Background technique [0002] In the field of traffic engineering, a variable lane is defined as a lane that can be manually or automatically changed according to different directions of flow and traffic control requirements. Manual switching refers to the method of switching the variable guidance lane indicator signs at regular intervals according to the preset scheme, and then changing the lane guidance. Adaptive switching refers to the method of automatically changing the direction of variable lanes by judging the corresponding switching direction and sequence according to the change of flow direction of the entrance lane. [0003] At present, the traffic flow of my country's urban arterial roads changes frequently, and the phenomenon of time-segment asymmetry is obvious, and the demand fo...

AI Technical Summary

Problems solved by technology

[0005] 1. Low degree of automation control

[0006] Full manual control or simple automatic switching based on single index trigger, response lag and low controllability

[0007] 2. The switching smoothness is low

[0008] The transition of existing vehicles in the variable lane and the smooth connection between manual mode and automatic mode are not fully considered, the switching mechanism is too rigid and there are too few safety guarantees during the switching period

[0009] 3. Lack of data evaluation for switching basis and switching effect

[0010] The conditions for switching triggers are only manually calibrated period divisions, which do not match the changes in actual traffic flow. The switching effect evaluation system and data are not perfect, and there is a large risk of negative effects in the switching operation

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