A Coordinated Control Method for Arterial Lines Based on Traffic Waves in the Background of Road Construction Areas
A technology of coordinated control and construction area, applied in the direction of road vehicle traffic control system, traffic control system, control of traffic signals, etc., can solve problems such as reducing the traffic capacity of road sections
Active Publication Date: 2021-04-23
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
Although the arterial coordinated control model itself is relatively mature, the existence of the construction zone has changed, which will not only reduce the traffic capacity of the road section, but also change the vehicle release at the upstream intersection and the vehicle arrival rate model at the downstream intersection, making the original Signal timing scheme no longer applicable
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[0020] A traffic wave-based coordinated control method for an arterial line under the background of a road section construction area, including the following content:
[0021] 1. Traffic wave characteristic analysis module
[0022] a. Intersection traffic wave model not affected by construction zone
[0023] For intersections not affected by construction areas, there are four types of traffic waves: stop waves, starting waves, evanescent waves, and compression waves. Such as figure 1 shown. Figure a is the traffic wave spread map under the unsaturated traffic state, and figure b is the traffic wave spread map under the oversaturated state, and the numbers in the figure are the traffic state labels of the vehicles. In the unsaturated state, the parking wave will be generated when the red light is turned on; and in the supersaturated state, the compression wave will be generated first when the red light is turned on, and both will disappear until the intersection with the eva...
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The invention discloses a coordinated control method for trunk lines based on traffic waves in the background of road construction areas, comprising the following steps: step 1, establishing a traffic wave model that can reflect the characteristics of construction areas; The parking delay at the intersection; step 3, the main goal is to minimize the parking delay of the coordination phase, the minimum parking delay at the intersection is the secondary goal, and the coordination phase queuing vehicle does not overflow as the constraint condition to establish a dual-objective arterial coordination model. Compared with the prior art, the positive effects of the present invention are: the present invention fully considers the influence of the existence of the construction area on the speed probability distribution, arrival rate, and queued vehicle length and time of vehicles, and establishes the traffic-based Wave's mainline coordination model. By adopting the method of the invention, more accurate arterial coordination results can be obtained, the traffic delay caused by the construction area can be reduced as much as possible, and the traffic capacity of the road section in the construction area can be effectively improved.
Description
technical field [0001] The invention relates to a traffic wave-based arterial coordinated control method under the background of road section construction areas. Background technique [0002] There are a large number of construction areas in urban roads in many countries, and these construction areas have a great impact on urban traffic. Construction areas compress road resources, increase high traffic delays and travel costs, and may also cause high-frequency traffic accidents. The existence of construction areas on urban road sections will change traffic parameters such as arrival rate, departure rate, and average vehicle speed at intersections, making the original signal control scheme in urban roads no longer applicable, resulting in delays and increased parking times. It is very important to study the coordinated control scheme of the arterial line under the influence of the construction zone to alleviate the negative impact of the construction zone on urban traffic. ...
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IPC IPC(8): G08G1/01G08G1/08
CPCG08G1/0145G08G1/08
Inventor 杨达陈玉婷贾冰梅
Owner SOUTHWEST JIAOTONG UNIV