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An indirect optimal control method for roundabouts based on upstream intersection control

A technology for optimizing control and intersections, applied in traffic control systems, traffic control systems for road vehicles, and controlling traffic signals, etc., can solve problems such as ignoring the linkage between roundabouts and other signalized intersections upstream

Inactive Publication Date: 2021-03-02
JILIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is to provide an indirect optimal control strategy for the traffic operation of the roundabout, solve the problem that the existing control method ignores the linkage between the roundabout and other signalized intersections upstream, and ensure the overall normal operation of the local traffic network. Indirect Optimal Control Method of Roundabout Based on Upstream Intersection Control

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  • An indirect optimal control method for roundabouts based on upstream intersection control
  • An indirect optimal control method for roundabouts based on upstream intersection control
  • An indirect optimal control method for roundabouts based on upstream intersection control

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Embodiment Construction

[0014] A kind of multi-branch roundabout self-adaptive traffic signal control method of the present embodiment, it is realized according to the following steps:

[0015] Step 1: Arrange coil detectors at each entrance of the roundabout. A typical rectangular intersection contains m entrances and m exits. The maximum queuing length L allowed at each entrance, exit and entrance of a multi-way roundabout max An induction coil detector is arranged at the place, and the length and width of the detector are both 2.0m. Among them, at the entrance and exit of the roundabout, the detector is arranged at the position 0.5m behind the stop line of the lane, and the maximum queuing length L allowed at the entrance lane max , the detectors are placed on the centerline of the road. Such as figure 2 As shown, the present invention takes the roundabout of a typical five branch roads as an example, and specifically shows the layout mode of the detector. After the layout is completed, the def...

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Abstract

The invention relates to the field of urban traffic signal control, in particular to an indirect optimal control method for roundabouts based on upstream intersection control. The present invention proposes an indirect optimal control method for roundabouts based on upstream intersection control, aiming at indirectly optimizing the operation of roundabouts from the perspective of demand control, and providing a new idea for traffic control at roundabouts. The invention includes three modules: an information collection module, a state discrimination module, and a coordination control module. The three modules cooperate with each other according to the control process, control the traffic flow to the roundabout from the source, and establish a dissipative environment for the traffic flow out of the roundabout, and indirectly realize the coordination and optimization of the roundabout and the surrounding signalized intersections. The roundabout below provides an optimization strategy.

Description

technical field [0001] The invention relates to the field of urban traffic signal control, in particular to an indirect optimal control method for roundabouts based on upstream intersection control. Background technique [0002] Roundabout is a common form of traffic organization. When vehicles are running in this intersection, the conflict point is converted into a weaving area, so it shows excellent performance in terms of driving safety and exhaust emission. However, with the increase of traffic flow at the entrance of the roundabout, local congestion is very likely to occur in this traffic organization. If it cannot be evacuated in time, the congestion will spread, and in severe cases, a large area of ​​regional traffic congestion will break out. In the face of this problem, some traffic managers advocate the demolition of roundabouts and rebuilding them into level signalized intersections. This method not only consumes a lot of economic costs, but is also not suitable f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/07G08G1/08G08G1/081
CPCG08G1/07G08G1/08G08G1/081
Inventor 杨庆芳赵小辉林赐云龚勃文方云峰栾思良张帆
Owner JILIN UNIV