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Signal timing optimization method of intersection with construction area

A technology of signal timing and optimization method, applied in the direction of traffic signal control, design optimization/simulation, traffic control system, etc., to achieve good travel experience, ensure traffic safety, and optimize signal effects

Active Publication Date: 2019-10-22
SOUTHWEST JIAOTONG UNIV
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] Current research on signaling under the influence of construction zones is limited

Method used

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  • Signal timing optimization method of intersection with construction area
  • Signal timing optimization method of intersection with construction area
  • Signal timing optimization method of intersection with construction area

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Embodiment Construction

[0027] A signal timing optimization method at an intersection with a construction area, comprising the following content:

[0028] 1. Saturated flow rate module in island construction area

[0029] The saturated flow rate module of the island construction area establishes the car-following model of the island construction area at the intersection, and further proposes a calculation model for the saturation flow rate of the island construction area, and collects data to calibrate the relevant parameters of the model.

[0030] (1) Modeling of vehicle following behavior in island construction area

[0031] Saturated flow rate is a very critical index for timing timing of signalized intersections. In order to calculate the saturated flow rate of island-type construction areas, the present invention considers the characteristics of island-type construction areas and improves the existing car-following model, thereby using to calculate the saturation flow rate in the island constru...

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Abstract

The invention discloses a signal timing optimization method of an intersection with a construction area. The method comprises the following steps: step 1, calculating the saturation flow rate of an island type construction area; step 2, calculating the time when the release rate state of the inlet channel changes; step 3, calculating the vehicle delay of the entrance road of the intersection; step4, calculating the phase emptying time under the condition of having the construction area; and step 5, establishing an objective function and solving an optimal solution as the signal timing in caseof having the construction area. The FVD model is improved and the saturation flow rate model of the island type construction area at the signal intersection is put forward. The island type construction area intersection signal optimization model is proposed on the basis of the vehicle arrival-departure delay model so as to ensure the traffic safety of motor vehicles and non-motor vehicles to themaximum extent at the intersection of the island type construction area. The island type intersection has better signal optimization and the passengers are ensured to have better travel experience.

Description

technical field [0001] The invention relates to a signal timing optimization method at an intersection with a construction area. Background technique [0002] In recent years, developed countries are maintaining and rebuilding old transportation facilities, and developing countries are building new transportation facilities, which has resulted in a large number of construction areas on domestic and foreign expressways and urban trunk lines. In the United States, approximately 3,000 construction zones existed during peak construction periods. According to the Federal Highway Administration survey, road construction is the second cause of dissatisfaction with the transportation system. According to the US Department of Energy report, about 24% of the non-recurring delays experienced by drivers are caused by construction zones. [0003] Construction zones widely exist in highways and urban roads, and have obvious negative effects on road capacity and traffic safety. Existing...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/07G08G1/01G06F17/50G06Q10/04G06Q50/30
CPCG08G1/07G08G1/0125G08G1/0137G06Q10/04G06F2111/04G06F30/20G06Q50/40Y02T10/40
Inventor 杨达吴悦竹沈悦苏刚
Owner SOUTHWEST JIAOTONG UNIV
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