Traffic signal setting method for elimination of cross signal intersection left-turn phase

A technology for traffic signals and intersections, which is applied in the field of traffic signal setting to eliminate the left-turn phase of a cross signal intersection, so as to solve the hidden safety hazards of the intersection, reduce the number of signal phases and the loss time of signal conversion, and improve the traffic efficiency.

Active Publication Date: 2015-11-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on the above deficiencies, the purpose of the present invention is to propose a traffic signal setting method that eliminates the left-turn phase of a cross signal intersection, solves the potential safety hazards caused by left-turn vehicles and improves the traffic efficiency of the intersection

Method used

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  • Traffic signal setting method for elimination of cross signal intersection left-turn phase
  • Traffic signal setting method for elimination of cross signal intersection left-turn phase
  • Traffic signal setting method for elimination of cross signal intersection left-turn phase

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Step 1: The traffic organization form of left-turn traffic flow at the intersection should be set as follows.

[0057] Vehicles that turn left at the south and north entrances enter the signal-controlled intersection and turn left by turning right and then going straight. figure 1 Streamline 1-streamline 1, streamline 4-streamline 4.

[0058] Vehicles turning left at the east and west entrances enter the signal-controlled intersection and then turn left by going straight and turning right. figure 1 Streamline 2-streamline 2, streamline 3-streamline 3.

[0059] And should be equipped with corresponding traffic signs, mainly set up detour signs and prohibition signs, the setting position and style are as attached figure 1 , 2 As shown, detour signs and prohibition signs (a) are set up at north-south entrances; detour signs and prohibition signs (b) are set up at east-west entrances; and detour signs and prohibition signs (a) and (b) should be set at 30 meters from t...

Embodiment 2

[0092] as attached Figure 7 As shown, the two intersecting roads at the signalized intersection are two-way six-lane lanes, the lane width is 3.75m, and the median width is 5m. The U-turn road is the one with the median strip. Figure 7 The central divider on the left and right is 40m long, and the opening spacing is 8m; Figure 7 The two partitions in the middle are 50m long and the gap between openings is 15m.

[0093] And after investigation, the west entrance turns left and the peak traffic flow is V 西口左转量 280pcu / h, east entrance turn left peak traffic flow V 东口左转量 is 350pcu / h, the timing t of the first phase 1 =50s, the timing of the second phase t 2 = 50s, the average speed v of the left-turning vehicles at the south and north entrances 左转 =15 (km / h); the minimum headway distance d=8m when left-turning vehicles line up.

[0094] The traffic signal design for eliminating the left-turn phase at this intersection is carried out as follows:

[0095] Step 1: The traff...

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Abstract

The invention discloses a traffic signal setting method for elimination of cross signal intersection left-turn phase, i.e. when a left-turn vehicle enters a signal control intersection, left turning can be realized by a method of turning right and turning around and then moving straightly or moving straightly and turning around and then turning right so that the number of the intersection signal phase and signal conversion time loss can be reduced, and an objective of enhancing intersection traffic capacity can be achieved. According to the setting method, safety hidden trouble of the intersection caused by the left-turn vehicle can be solved, and the number of the intersection signal phase and signal conversion time loss can be reduced so that intersection traffic efficiency can be substantially enhanced.

Description

technical field [0001] The invention belongs to the field of traffic engineering, and in particular relates to a traffic signal setting method for eliminating the left-turn phase at a signal intersection. Background technique [0002] The traditional intersection design has many conflict points and great potential safety hazards. There are 32 potential conflict points in the two-way two-lane intersection. Vehicles can collide when merging or diverging in the same lane; but the worst-case scenario occurs in the middle of an intersection, where a left-turning vehicle collides with an oncoming straight vehicle. [0003] However, the existence of left-turn traffic flow not only brings safety problems, but also increases the number of signal phases at the intersection, increases the delay at the intersection to a certain extent, and reduces the vehicle traffic efficiency at the intersection. [0004] Intersections are the bottleneck of the entire road network traffic operation. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/07E01C1/02
Inventor 蒋贤才王安妮徐烨超
Owner HARBIN INST OF TECH
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