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Ramp control method for multiple lanes of expressway based on density

A control method and multi-lane technology, applied in the field of traffic information, can solve problems such as difficult to achieve the ideal control effect of traffic state, deviation of traffic state, rough judgment of traffic state, etc., to achieve increased stability and anti-interference ability, easy data acquisition, Avoid calculating inaccurate effects

Active Publication Date: 2017-05-24
四川易方智慧科技有限公司
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Problems solved by technology

[0004] The main purpose of the present invention is to provide a density-based multi-lane ramp control method for expressways, which solves the problem that the existing ramp control strategy is relatively rough in judging the traffic state, which may have a large deviation from the actual traffic state, and it is difficult to correspond to the traffic state. The problem of the ideal control effect of

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  • Ramp control method for multiple lanes of expressway based on density
  • Ramp control method for multiple lanes of expressway based on density
  • Ramp control method for multiple lanes of expressway based on density

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[0053] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0054]A density-based multi-lane ramp control method on an expressway comprises two parts: a multi-lane dynamic density model and a real-time density-based multi-lane ramp control strategy. Among them, the multi-lane dynamic model is used to describe and determine the traffic operation state in the control area, and the multi-lane ramp control strategy implements ramp control under the specific traffic operation state.

[0055] Multi-lane dynamic density model

[0056] The classic ...

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Abstract

The invention discloses a ramp control method for multiple lanes of an expressway based on density, which belongs to the technical field of traffic information. Firstly, ramp traffic and mainline traffic are considered, and the density parameters of ramp traffic and mainline traffic are simultaneously integrated in a control target. Thus, the mainline traffic flow is the largest, and the problems of long queue on the ramp and big queuing delay are solved. Secondly, density instead of occupancy and traffic is directly selected as a control parameter, so that convenient data acquisition and unique description of traffic are realized. Thirdly, the difference between multiple lanes in traffic flow characteristic and the lane-changing behaviors of vehicles are fully considered, the traffic state is accurately judged from a more micro perspective, and therefore, the effect of ramp control is improved.

Description

technical field [0001] The invention relates to the technical field of traffic information, and specifically provides a density-based multi-lane ramp control method on an expressway. Background technique [0002] The typical ramp control algorithm ALINEA takes the main line occupancy rate as the control parameter, and its purpose is to maintain the main line occupancy rate near the expected occupancy rate. In the actual control process, the determination of the occupancy rate is affected by traffic flow density, vehicle length and detection coil length Influenced by other factors, in the case of mixed traffic flow, the accurate determination of occupancy rate is limited. ALINEA's extended algorithms UP-ALINEA, FL-ALINEA, UF-ALINEA, AD-ALINEA, AU-ALINEA, PI-ALINEA, etc. For the convenience of data collection in practical applications, most of the algorithms use the mainline flow as the control parameter, so that the mainline Traffic flow remains around expectations. However...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/07G08G1/08
CPCG08G1/075G08G1/08
Inventor 唐立罗霞翟鹏飞高洵飞
Owner 四川易方智慧科技有限公司
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