Variable lane emptying control method based on double-layer signal planning

A control method and lane technology, which is applied in the traffic control system of road vehicles, traffic control system, traffic signal control, etc., can solve the problem of insufficient consideration of lane clearing and signal timing coordinated control of space-time resources, etc.

Active Publication Date: 2018-12-18
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

However, the time required for lane clearing is affected by both the starting time of lane clearing control and the signal timing of downstream intersections. However, the current research rarely considers the problem of coordinated control of lane clearing and signal timing and the insufficient utilization of space-time resources.

Method used

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  • Variable lane emptying control method based on double-layer signal planning
  • Variable lane emptying control method based on double-layer signal planning
  • Variable lane emptying control method based on double-layer signal planning

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Embodiment Construction

[0039] (1) Optimal control of lane indicator layer

[0040] The signal control scheme on the upstream of the tidal lane will affect the arrival distribution of vehicles in the tidal road section, which is mainly reflected in the difference in the traffic flow of the vehicles in the red light phase, the straight green light phase, and the left turn green light phase at the upstream intersection, which affects the travel characteristics of the vehicle section. Specifically as figure 1 shown.

[0041] Since the tidal lane change is implemented under the unbalanced flow ratio, it can be assumed that the vehicles merging during the green light going straight run at the saturated flow rate q, and the vehicles merging during the green light turning left have the flow rate q / k, where k is the ratio of the number of entering lanes going straight to the number of entering lanes turning left.

[0042] When the upstream vehicle goes straight through the green light, the incoming traffic...

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Abstract

The invention provides a variable lane emptying control method based on double-layer signal planning. The method comprises the following steps that: on the basis of a distributing wave theory, carrying out modeling analysis on a vehicle operation state under the difference state of going-straight green light merging traffic and left-handed rotation green light merging traffic; constructing a relationship between the switching moment of a lane indicator light and corresponding lane emptying time to carry out mathematical modeling, and on the basis, designing the signal optimization strategy ofa downstream intersection; and finally, obtaining a double-layer optimization model which balances the lane emptying time and a downstream intersection vehicle per delay influence. According to different lane indicator light transformation moments and downstream signal optimization strategies, a lane emptying rate is improved, the downstream intersection vehicle per delay is increased, and an optimal control strategy for balancing requirements is searched through the screening of the double-layer optimization model.

Description

technical field [0001] The invention relates to a double-layer planning method for fast clearing of lanes before tidal lane changes, and is mainly used to solve the coordinated optimal control of variable lanes and downstream intersections. Background technique [0002] The birth of variable lanes can not only make the rational use of traffic resources, but also make the road operation ability continue to improve. It can also reduce the land cost and economic cost for expansion due to the surge in traffic, and it can also effectively and more rationally utilize the urban planning land. However, the time required for lane clearing is affected by both the start time of lane clearing control and the signal timing of downstream intersections. However, the current research seldom considers the coordinated control of lane clearing and signal timing and the insufficient utilization of space-time resources. Therefore, in view of this problem, this patent proposes a variable lane cl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/095G08G1/09G08G1/07
CPCG08G1/07G08G1/09G08G1/095Y02T10/40
Inventor 刘小明尚春琳朱桂清郑国荣陈智董路熙蒋源秦利南
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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