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Expressway traffic flow induction method after accident under heterogeneous driving requirements

A technology for expressways and accidents, applied in traffic control systems, traffic flow detection, instruments, etc. of road vehicles, can solve problems such as difficulty in fully reducing potential road risks, inefficient utilization of expressway road resources, etc., and reduce secondary accidents Risk, ease of solution, and the effect of ensuring road safety

Active Publication Date: 2022-03-04
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that after an accident occurs on an existing expressway, a unified induction scheme is implemented for all vehicles, resulting in inefficient utilization of expressway road resources and difficulty in fully reducing potential road risks, and proposes a heterogeneous driving demand Post-accident freeway traffic flow induction method

Method used

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  • Expressway traffic flow induction method after accident under heterogeneous driving requirements
  • Expressway traffic flow induction method after accident under heterogeneous driving requirements
  • Expressway traffic flow induction method after accident under heterogeneous driving requirements

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specific Embodiment approach 1

[0018] Specific implementation mode one: combine figure 1 Describe this embodiment, the specific process of a post-accident expressway traffic induction control method based on heterogeneous driving demand in this embodiment is as follows:

[0019] The so-called "heterogeneity" means that after the accident, different types of vehicles are induced by different main factors. For example, emergency vehicles hope to reach the accident point as soon as possible through induction; while "two passengers and one danger" are highly accident-prone Therefore, when inducing it, the driving safety and the prevention of secondary accidents are the main points, and it is hoped that it can detour to a safe road section as much as possible.

[0020] Existing literature either does not distinguish between vehicle types, and conducts unified induction; or only conducts induction for a single vehicle type, and lacks a unified optimization solution that takes into account the driving needs of dif...

specific Embodiment approach 2

[0026] Specific embodiment two: the difference between this embodiment and specific embodiment one is that in the described step one, information such as accident time and traffic OD on the expressway is obtained from the road detector, the expressway database, etc.; the specific process is as follows:

[0027] Step 11: Combining the alarm situation after the accident on the expressway and the detection information of the detector on the road layout, obtain information such as the date of the accident, the time of the occurrence, the location of the road, the length of the occupied lane, and the number of lanes occupied by the accident;

[0028] Step 1 and 2: Combining the historical database of the expressway network, detector data, etc., to obtain the current flow rate to be induced and OD distribution of the expressway; the process is:

[0029] 1) Obtain all the toll stations on the path of the accident point on the highway, and denote the upstream toll station of the accide...

specific Embodiment approach 3

[0044] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that in the step 2, in combination with the accident information, the real-time flow information of the induced road section, and the driving demand of vehicles, etc., it is determined whether to open the expressway traffic induction control measures; Such as figure 2 , the specific process is as follows:

[0045] Step 21: Determine whether the type of accident obtained in step 11 belongs to category A accidents. Category A accidents include extreme weather, fire, mudslides, landslides, explosions, serial rear-end collision accidents; other types of accidents are classified as category B accidents;

[0046] If the accident belongs to category A accidents, the road network traffic flow guidance strategy will not be activated, all exit ramps in the accident area will be opened, all entrance ramps will be closed, and all vehicles in the accident area will be guided out (you can issue reminders thro...

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Abstract

The invention discloses a post-accident expressway traffic flow induction method under heterogeneous driving requirements, and relates to a post-accident expressway traffic flow induction method under heterogeneous driving requirements. The invention aims to solve the problems that the existing highway road resource utilization is low in efficiency and the potential road risk is difficult to fully reduce. The method comprises the following steps: 1, acquiring accident occurrence time and traffic OD information on a highway; 2, judging whether to start expressway traffic flow induction management and control measures or not; 3, defining a vehicle detour index in a post-accident expressway traffic flow induction problem, and formulating a post-accident expressway traffic flow induction priority; 4, constructing post-accident expressway traffic flow induction optimization targets and induction constraints considering traffic flow driving requirements and priorities of different vehicle types; and 5, solving a post-accident expressway traffic flow induction optimization problem under the heterogeneous requirements with priorities, and finally obtaining a post-accident expressway traffic flow induction scheme. The method is applied to the field of intelligent traffic control.

Description

technical field [0001] The invention relates to the field of intelligent traffic management and control, and more specifically, the invention relates to a post-accident expressway traffic induction method under heterogeneous driving demands. Background technique [0002] As a key part of the comprehensive transportation network, expressway undertakes the task of inter-regional passenger and cargo flow and high-speed transportation daily, and plays an important role in promoting social production and economic development. However, the frequent occurrence of traffic accidents seriously restricts and affects the transportation efficiency and traffic safety of expressways. The damage and occupation of road facilities caused by traffic accidents will reduce the traffic capacity of expressways, which will lead to large-scale congestion and vehicle detention on expressways. If the traffic flow on the expressway is not properly induced at this time, the reckless driving of vehicles...

Claims

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Application Information

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IPC IPC(8): G08G1/07G08G1/087G08G1/01
CPCG08G1/07G08G1/087G08G1/0125Y02T10/40
Inventor 田婧宋现敏李志慧陶鹏飞马永建
Owner JILIN UNIV
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