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Special lane left-turn intersection pre-stop line and pre-signal setting method

A technology for pre-stop lines and intersections, applied in traffic signal control, design optimization/simulation, special data processing applications, etc., to achieve the effect of maximizing traffic capacity, optimizing settings, and ensuring traffic safety

Active Publication Date: 2016-07-20
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 2. Conventional signal control intersection signal control
Therefore, the prior art lacks a more scientific and reasonable setting method for the pre-stop line and pre-signal control unique to the left-turn intersection.

Method used

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  • Special lane left-turn intersection pre-stop line and pre-signal setting method
  • Special lane left-turn intersection pre-stop line and pre-signal setting method
  • Special lane left-turn intersection pre-stop line and pre-signal setting method

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specific Embodiment

[0072] In the embodiment of the present invention, the geometric conditions of the intersection are as follows: image 3 As shown, where: E is the east entrance, S is the south entrance, N is the north entrance, and W is the west entrance. The timing of the main signal at the intersection is shown in Table 1. At present, the west entrance plans to set up a left-turn lane by way, adopt the method in the present invention, set the maximum traffic capacity after setting up the left-turn lane by way, optimize the position of the pre-stop line and the timing of the pre-signal, and compare with the traditional Intersection design for comparison. The design input parameters are: the saturated flow rate at the pre-stop line entering the bypass left-turn lane, s p , take 1600veh / h; the saturated flow rate at the intersection stop line by taking the left-turn lane, s I , take 1800veh / h; main signal cycle time, C I Take 120s; the starting time of the main signal turn left green light...

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Abstract

The invention relates to a special lane left-turn intersection pre-stop line and pre-signal setting method, which adopts a special lane left-turn signal to control an intersection, and carries out integrated optimization on special pre-stop line and pre-signal setting, so that traffic capacity is improved on the basis of ensuring pass safety. The optimization setting method takes maximum traffic capacity as an optimization target, and establishes a linear programming model for optimizing with constraint conditions of queuing length, vehicle clearing and optimization parameter value range and the like being taken into consideration. The method can enable special lane left-turn intersection special pre-stop line and pre-signal setting key parameters to be integrated into a unified optimization model for synchronous optimization, thereby giving full play to the pass efficiency of the special lane left-turn intersection and relieving traffic jam.

Description

technical field [0001] The invention relates to a method for setting a stop line and a signal timing at a traffic signal control intersection, more specifically, a method for setting a pre-stop line and a pre-signal at a left-turn intersection. Background technique [0002] At-grade intersections are the bottleneck nodes of urban road traffic. In order to improve the utilization efficiency of space-time resources at intersections, an unconventional intersection using "turning left" was proposed. However, the current design method mainly follows the design method of general level intersections. For the special pre-stop line and pre-signal at the left-turn intersection, the value is mainly based on experience. There is no targeted optimization setting method, and there is no Invention patents for such methods were retrieved. [0003] According to the literature search of the prior art, it is found that there are mainly the following methods for the optimal design of signal co...

Claims

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Application Information

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IPC IPC(8): G08G1/08G06F17/50
CPCG06F30/20G06F2111/04G08G1/08
Inventor 赵靖韩印姚佼夏晓梅杨晓芳马晓旦何胜学范海雁
Owner UNIV OF SHANGHAI FOR SCI & TECH
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