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Traffic flow control method for switchable entrance/exit lane of signal intersection

A control method and intersection technology, applied in the direction of traffic signal control, etc., can solve the problems of chaotic internal operation and reduced traffic capacity of intersections, and achieve the effect of improving traffic efficiency, easy implementation, and simple scheme

Active Publication Date: 2018-01-23
ZHENGZHOU YONGWEI TECH TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of straight short lanes causes the forced merging of straight vehicles inside the intersection, which makes the operation order inside the intersection chaotic and reduces the traffic capacity

Method used

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  • Traffic flow control method for switchable entrance/exit lane of signal intersection
  • Traffic flow control method for switchable entrance/exit lane of signal intersection
  • Traffic flow control method for switchable entrance/exit lane of signal intersection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] see image 3 , Figure 4 , the traffic flow control method of variable entrance and exit lanes at signalized intersections of the present invention, for the situation that the number of straight lanes at the entrance is more than the number of straight lanes at the exit, according to the traffic flow running track and traffic design theory, the left-turn lane of the opposite entrance Optimize the design to increase the number of exit lanes at the opposite exit; the specific plan is: set the left-turn parking lines at the opposite entrance of the intersection to two, one is the original parking line 2, and the other is located at the original parking line 2 Move a certain distance backward as the left-turn stop line 1, and use the distance between these two left-turn stop lines as the variable entrance and exit lanes; The distance between stop line 1 and left-turn stop line 2 is used as a temporary straight exit lane, and within this distance, it gradually merges with t...

Embodiment 2

[0022] see image 3 , Figure 4 , the traffic flow control method for the variable entrance and exit lanes at signalized intersections in this embodiment is different from Embodiment 1 in that: by setting the main signal and pre-signal of left-turning vehicles at the two left-turning stop lines, it is guaranteed to In a certain period of time, this distance is used for the driving of left-turning vehicles, and in another period of time is used for driving of straight-going vehicles heading towards the entrance, so as to realize the orderly operation of left-turning vehicles and straight-going vehicles without increasing the passage of left-turning vehicles delay.

Embodiment 3

[0024] This embodiment takes the south entrance of the intersection of Zhujiang Road-Danfeng Street in Nanjing as an example to illustrate the specific implementation of the traffic flow control method for variable entrance and exit lanes at signalized intersections of the present invention.

[0025] Such as figure 2 As shown, due to the limitation of road conditions, the number of through lanes at the south entrance of the intersection is one more than the number of exit lanes at the north exit. According to the traffic flow trajectory and traffic design theory, the left-turn lane at the north entrance can be optimally designed to increase the number of exit lanes at the north exit. Set two left-turn parking lines at the north entrance of the intersection, one is the original parking line, and the other is located at a certain distance behind the original parking line. The distance between the two left-turn parking lines is used as a variable entrance and exit lane . In a ...

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Abstract

The invention relates to a traffic flow control method for lanes having a switchable entrance / exit lane of a signal intersection. With regard to a condition that the entrance straight lanes are more than the exit straight lanes, according to a traffic flow operation track and a traffic design theory, optimization design is made on an entrance left-turn lane of the opposite-direction entrance so asto increase the exit lanes of the opposite-direction exit. Two left-turn parking lines of the opposite-direction entrance of the intersection are arranged, wherein one is a prior parking line 2 whilethe other is disposed in a rear position a specific distance away from the prior parking line 2 and acts as a left-turn parking line 1. The distance between the two left-turn parking lines is adoptedas the switchable entrance / exit lane. When straight driving vehicles in the current direction are allowed to pass, the straight driving vehicles on the inner straight lane of the current direction utilize the distance between the left-turn parking line 1 and the left-turn parking line 2 as a temporary straight exit lane for passing and gradually merge to straight driving vehicles on the right side exit lanes in said distance. Therefore, merging conflicts in the intersection is transferred to the external side of the intersection and the through efficiency of the intersection is improved.

Description

technical field [0001] The invention relates to a channelization design scheme and signal control technology for a variable entrance and exit lane at a signalized intersection. Background technique [0002] Urban road intersections are the bottleneck of urban traffic flow and the nodes of urban traffic congestion. Scholars have conducted extensive research on them. Existing studies mostly focus on the capacity calculation, traffic flow characteristics analysis and left-turn lane setting of each flow direction at the intersection. In order to make full use of the space-time resources of intersections, some scholars have also conducted research on variable entrance lanes at intersections. There are two main types of research on variable entrance lanes. One is to use the first exit lane on the left side of the intersection entrance lane as a left-turn entrance variable lane (the exit lane can be used as a left-turn entrance lane during certain periods of time. ), and the othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/07
Inventor 李爱增张靖思王旭波张振锋吴冰花魏艳楠
Owner ZHENGZHOU YONGWEI TECH TRADE
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