Signal-control crossing left turn traffic combination design optimization method

A technology of information-controlled intersection and combination design, which is applied in the field of optimization of left-turn traffic combination design at information-controlled intersections, and can solve the problems of unconsidered and inapplicable optimization methods.

Active Publication Date: 2017-08-04
TONGJI UNIV
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AI Technical Summary

Problems solved by technology

However, since the channel planning scheme of this method is only to determine the function of the left-turn lane, and does not consider the influence of the left-turn waiting area and the length (capacity) of the left-turn short lane on t

Method used

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  • Signal-control crossing left turn traffic combination design optimization method
  • Signal-control crossing left turn traffic combination design optimization method
  • Signal-control crossing left turn traffic combination design optimization method

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Embodiment

[0151] Such as image 3 shown. The case is that a left-turn short lane and a left-turn waiting area can be set up at the west entrance of a conventional four-way intersection. The specific space conditions, signal schemes, traffic flow operating parameters, and traffic arrival conditions are shown in Table 4, taking the east-west entrance road as an example Analyze the optimization results:

[0152] Table 4 Intersection space-time resource conditions and traffic flow operating parameters

[0153]

[0154] Optimization scheme analysis:

[0155] In order to more comprehensively compare the impact of setting left-turn short lanes and left-turn waiting areas on the time-space optimization scheme of left-turn traffic at the entrance, the optimization schemes are presented in four categories: "No left-turn short lane at west entrance & no left-turn waiting area area", "the west entrance has no left-turn short lane & there is a left-turn waiting area", "the west entrance has a ...

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Abstract

The invention relates to a signal-control crossing left turn traffic combination design optimization method. The method includes the steps of 1) acquiring the geometric condition, signal scheme and historical traffic demand of a target crossing, clarifying the service level requirements of the crossing and converting the requirements into the input parameters of a left-turn traffic time-space optimization model; 2) establishing the left-turn traffic time-space optimization model by taking the crossing average traffic delay minimum as the objective function and combining wth the constraint condition; 3) and solving the left-turn traffic time-space optimization model and obtaining the left-turn traffic time-space optimization scheme considering the left-turn waiting area and short lane combination design. The optimization scheme includes left-turn space design parameters and a signal scheme. Compared with the prior art, the method has the advantages of optimizing the left-turn waiting area/short lane capacity, lane function and signal scheme at the same time.

Description

technical field [0001] The invention relates to the field of traffic design and traffic control, in particular to a design optimization method for left-turn traffic combination at a signal-controlled intersection. Background technique [0002] With the continuous advancement of my country's urbanization process, the number of motor vehicles has increased year by year, and the load on urban road systems has become increasingly serious. Problems such as urban traffic congestion, air quality, and frequent accidents have become increasingly prominent. As the basic node of urban road traffic network, level intersections gather traffic flows in different directions. Multiple interweaving traffic flows complete mutual interference behaviors such as diversion, convergence and conflict on the same plane. Due to the limitation of space and time, the intersection has become the bottleneck restricting the full function efficiency of the whole road traffic system. Statistics show that ...

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Application Information

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IPC IPC(8): G08G1/07G08G1/01E01C1/02
CPCE01C1/02G08G1/0125G08G1/0129G08G1/07Y02T10/40
Inventor 马万经刘烨
Owner TONGJI UNIV
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