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A Ground Traffic Organization Optimization Method Applicable to Separated Three-level Intersections

An optimization method and a separate technology, applied in the direction of controlling traffic signals, etc., can solve the problems of low utilization of space-time resources and high delays

Inactive Publication Date: 2020-08-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a ground traffic organization optimization method suitable for separate three-level intersections in order to solve the problems of generally high traffic delays and low utilization rate of space-time resources

Method used

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  • A Ground Traffic Organization Optimization Method Applicable to Separated Three-level Intersections
  • A Ground Traffic Organization Optimization Method Applicable to Separated Three-level Intersections
  • A Ground Traffic Organization Optimization Method Applicable to Separated Three-level Intersections

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specific Embodiment approach 1

[0026] Specific implementation mode one: a kind of ground traffic organization optimization method applicable to the separated three-level interchange of the present embodiment The specific process is as follows:

[0027] Step 1: Assume that the north-south direction is taken as the direction of the underpass tunnel, and the east-west direction is taken as the direction of the overpass; the signal controls the operation rules of each entrance lane and the vehicles on the bypass waiting lane; the specific process is:

[0028] For the east-west entrance road, pre-signal lights are set before the U-turn lane under the overpass. The pre-signal lights include east-west straight ahead pre-signal lights, east-west left turn pre-signal lights, and east-west exit roads are equipped with north-south straight second stage signal lights before the U-turn lane;

[0029] When the north-south straight traffic signal light (the first phase of north-south straight traffic signal light) is on, t...

specific Embodiment approach 2

[0044] Specific implementation mode two: the difference between this implementation mode and specific implementation mode one is that in the third step of the complaint, the length G of the north-south straight line to be transferred area is determined according to step one, step two and the actual situation of the road, and the specific process is as follows:

[0045] The height of the U-turn lane under the overpass bridge is greater than or equal to 4.5m, and the length G of the north-south straight line waiting area should satisfy ① and ②, as shown in Figure (1).

[0046] The length G of the north-south straight waiting area should be determined in conjunction with the actual road conditions of the specific intersection, but it should be satisfied that during peak hours, if the north-south straight vehicles are in an unsaturated state, the straight waiting vehicles arriving within one signal cycle can all be within Stop and wait in the waiting area; if the north-south straig...

specific Embodiment approach 3

[0051] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the safe stopping distance Lc of the queuing vehicles is 8m.

[0052] Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

A ground traffic organization optimization method applicable to separate three-layer three-dimensional intersection is disclosed. The invention relates to the ground traffic organization optimizationmethod applicable to separate three-layer three-dimensional intersection and aims to solve the problems that current traffic delay is generally high and the utilization of space-time resources is low.The method comprises the steps of (1) supposing that a north-south direction is used as the direction of an undercrossing tunnel and an east-west direction is used as the direction of an overpass bridge, wherein specified signals control the running rules of vehicles in each entrance lane and detour waiting lane, (2) supposing that the north-south direction is used as the direction of the undercrossing tunnel and the east-west direction is used as the direction of the overpass bridge, and coordinating signal time assignment of main and pre-signal and north-south direction straight second stage signals, and (3) determining a length G of a north-south straight turnaround waiting zone according to steps (1) and (2) and a road actual condition and carrying out intersection signal time assignment. The method is used in the field of traffic organization optimization.

Description

technical field [0001] The invention relates to a ground traffic organization optimization method suitable for a separated three-level intersection. Background technique [0002] my country's cities continue to expand and the urbanization process continues to advance. Traffic congestion and traffic congestion have become common traffic problems faced by major cities today. The intersection is the key of urban traffic, it is the "bottleneck" zone of the whole urban road. Roads are connected by many intersections to form a road network. Scholars and researchers at home and abroad have done a lot of work and in-depth research on the traffic organization design of urban road intersections, and have achieved many research results. [0003] Among them, for the separated three-level intersection (non-interconnecting type intersection), flyover bridges (upper-passing type) and tunnels (under-passing type) are used to make the intersecting roads pass through the upper, middle and l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/07
CPCG08G1/07
Inventor 章锡俏杨龙海张春朱晓燕吉文超谢泽钜
Owner HARBIN INST OF TECH
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