Motor vehicle stream-oriented intersection traffic pre-signal control method

An intersection and signal control technology, applied in the direction of controlling traffic signals, etc., can solve problems such as the decrease of the traffic capacity of the intersection, the adjustment of the timing plan of the pre-signal and the main signal, and the congestion of motor vehicles.

Active Publication Date: 2015-01-28
哈尔滨工业大学高新技术开发总公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing intersection traffic pre-signal control method determines the distance between the pre-signal stop line and the main stop line based on subjective experience, and the timing scheme of the pre-signal and main signal cannot be adjusted according to the dynamic change of traffic flow, As a result, the traffic capacity of the intersection is reduced and the problem of motor vehicle congestion is caused. A traffic pre-signal control method at the intersection oriented to motor vehicle flow is provided.

Method used

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  • Motor vehicle stream-oriented intersection traffic pre-signal control method

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specific Embodiment approach 1

[0020] Specific implementation mode one, combination Figure 1-Figure 3 This specific embodiment is described. A traffic pre-signaling control method for intersections facing motor vehicle flow, which includes the following steps:

[0021] Step 1: Carry out the organization of the entrance lanes at the intersection and the layout of signal control facilities;

[0022] Step 2: Perform static traffic data collection according to the signal control facility layout completed in Step 1.

[0023] The static traffic data includes the width of each lane of the intersection, the saturated traffic flow rate of each entrance lane of the intersection, and the green light loss time of each phase of the intersection;

[0024] Step 3: Use the four-phase signal control method at the intersection, and the phase sequence setting of the pre-signal and the main signal are the same;

[0025] Step 4: Use the signal control facility described in step one and the static traffic data described in step two to p...

specific Embodiment approach 2

[0026] Specific embodiment two, this specific embodiment is different from specific embodiment one in the step one: the process of organizing the intersection entrance lane and laying out signal control facilities is:

[0027] Step 1A: Determine the length of the waiting area in each entrance direction of the intersection; the waiting area is the area between the main signal stop line and the pre-signal stop line;

[0028] Length of waiting area in the i-th entrance direction L i for:

[0029] L i =1.2×L imax +20

[0030] Unit: m, where:

[0031] L i max = max ( C 0 X q ‾ il , C 0 X q ‾ is ) X L ‾

[0032] Where C 0 It is the maximum period of the intersection during peak hours under the timing control mode, the unit is s;

[0033] It is the average headway distance of motor vehicles under queuing conditions, the unit is m;

[0034] It is the ratio of the flow of left-turning motor vehicles in the i-th entrance direct...

specific Embodiment approach 3

[0045] Specific implementation mode three, combination Figure 4 This specific embodiment is described. The difference between this specific embodiment and the second embodiment is the step four: use the signal control facility described in step one and the static traffic data described in step two to perform main signal and pre-signal according to the four-phase signal control method described in step three The process of coordinated control is:

[0046] Step 4A: Clear the initial data of the induction coil detector;

[0047] Step 4B: The main signal turns on sequentially according to the preset phase sequence, and the pre-signal turns on according to the main signal sequence;

[0048] The corresponding relationship of the green light phase is: when the green light of the i-th phase of the main signal starts to light up, the i-th phase of the pre-signal and the green light of the j-th phase start to light synchronously;

[0049] j=mod(i+1,4)+1

[0050] i=mod(i,4)+1

[0051] mod is the...

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Abstract

The invention discloses a motor vehicle stream-oriented intersection traffic pre-signal control method and relates to an intersection traffic signal control method. The invention aims to solve the problems that the intersection traffic capacity is reduced and motor vehicles are jammed due to the fact that the distance between a pre-signal stop line and a main stop line is determined according to subjective experiences and the timing plane of a pre-signal and a main signal cannot be regulated according to dynamic changes of traffic flow by adopting a traditional intersection traffic pre-signal control method. The motor vehicle stream-oriented intersection traffic pre-signal control method comprises the following steps of: performing intersection entrance lane organization and signal control facility layout; performing static traffic data acquisition according to the signal control facility layout finished in the step I; enabling an intersection to adopt a four-phase signal control method, and enabling the pre-signal and the main signal to be same in phase and phase sequence setting; and performing coordination control of the main signal and the pre-signal by utilizing a signal control facility in the step I and static traffic data in the step II according to the four-phase signal control method in the step III. The motor vehicle stream-oriented intersection traffic pre-signal control method disclosed by the invention can be widely applied to intersections to perform traffic signal control.

Description

Technical field [0001] The invention relates to a traffic signal control method at a cross intersection. Background technique [0002] At present, the traffic congestion in major cities in my country is gradually deteriorating, and the number of oversaturated intersections is increasing, which seriously hinders the social and economic development. The main reason for the oversaturation phenomenon at intersections is that the arriving traffic flow is greater than the capacity of the intersection, so increasing the capacity of the intersection has become an important means to solve traffic congestion. The traffic capacity of an intersection is closely related to the lane organization and signal timing plan. The pre-signal control method controls the flow of motor vehicles by adding a stop line and a set of signal lights after the stop line at each entrance direction of the intersection. The organization and signal timing plan improve the traffic capacity of intersections, which ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/07G08G1/08
Inventor 别一鸣
Owner 哈尔滨工业大学高新技术开发总公司
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