Traffic control method for dynamic coordination according to effective capacity of road section

A technology of effective capacity and dynamic coordination, which is applied in the traffic control system of road vehicles, traffic control system, traffic signal control, etc., can solve the problems of lack of real-time monitoring, and achieve the effect of preventing trunk congestion

Inactive Publication Date: 2012-07-25
郭海锋
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Problems solved by technology

However, the existing research still lacks consideration in two aspects. On the one hand, there is a lack of real-time monitoring of the operating status of th

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  • Traffic control method for dynamic coordination according to effective capacity of road section
  • Traffic control method for dynamic coordination according to effective capacity of road section
  • Traffic control method for dynamic coordination according to effective capacity of road section

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Embodiment Construction

[0037] In order to enable those skilled in the art to better understand the solution of the present invention, the specific implementation method of the technical solution will be further described in detail below.

[0038] A calculation method for the effective capacity of a road section, the specific calculation steps are as follows:

[0039] 1) Calculate the maximum number of vehicles that the current road section can accommodate

[0040] The maximum number of vehicles that can be accommodated in the current section can be calculated according to the formula Calculate and obtain, where L(i) is the length of the basic road section, l(i) is the length of the channelized road section, LV is the average vehicle length, SV is the distance between saturated vehicles, n is the number of non-channelized lanes, m is the channelized lane number.

[0041] 2) Calculate the number of vehicles in the current section of each lane

[0042] The number of vehicles on road section i consi...

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Abstract

The invention discloses a traffic control method for dynamic coordination according to effective capacity of a road section. The method comprises the following steps of: first, proposing an effective bandwidth evaluation method to monitor the running state and the control effect of the existing trunk-road green-wave coordinating and controlling system; and second, learning from a TCP/IP (Control Protocol / Internet Protocol) window flow control thought, and designing a window-flow-controlled trunk-road dynamic coordinating and controlling method to control the crowed traffic flow of urban trunk roads. Simulation tests and compared results show that a downstream intersection can inform the effective capacity of the road section to an upstream intersection in real time in a mode of a window flow notice, and a traffic signal machine of each intersection can conveniently redistribute the green time of each traffic flow according to the current traffic demand and the effective capacity of the road section to avoid the overlong green time to cause queuing vehicles in the road section to overflow.

Description

technical field [0001] The invention relates to the field of urban traffic arterial control, in particular to a method for calculating the effective capacity of road sections. Background technique [0002] The existing arterial coordinated control method mainly seeks to maximize the green wave bandwidth under given traffic conditions by adjusting the signal timing parameters of adjacent signalized intersections, so it is also called arterial green wave coordinated control. Practice has proved that the green wave coordinated control of the main line has a good control effect in the unsaturated condition, but it is far from the expected control effect in the saturated and oversaturated condition, and even the queuing vehicles overflow to the upstream intersection, resulting in a green light at the upstream intersection During this period, the vehicle cannot pass through the "deadlock" phenomenon. Judging from the development trend of existing products, when designing the gree...

Claims

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Application Information

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IPC IPC(8): G08G1/00G08G1/07
Inventor 郭海锋
Owner 郭海锋
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