Intersection signal timing method based on low-permeability networked vehicle trajectory data
A trajectory data and low penetration rate technology, applied in the field of traffic behavior analysis and data processing, can solve the problems of reducing the traffic efficiency of urban road networks, achieve the effect of integrated development, alleviate road network congestion, and prevent intersection overflow
Active Publication Date: 2022-03-04
SOUTHEAST UNIV
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Queue overflow usually occurs when the queue exceeds the length of the road section. Once the overflow control is not timely, the congestion may spread from a single intersection to the upstream, downstream and adjacent intersections, greatly reducing the traffic efficiency of the urban road network
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[0080] Step 10. Based on the SUMO platform, build a low-penetration network-connected vehicle road network that requires optimal signal timing at intersections;
[0081] Using the visual network editor netedit in SUMO software, a simple road network with 9 intersections is constructed, such as figure 2 shown, and modify all aspects of an existing road network based on netedit. By sequentially numbering each intersection and naming each path according to a unified standard, it is convenient for later editing and vehicle data input.
[0082] Step 20. Input road network data;
[0083] Input the initial vehicle data, a total of 292 trajectory flows, and construct the overflow situation of multiple intersections by changing the traffic volume of each path. The vehicles adopt a uniform type, and the traffic flow is input in two stages. The first stage has a low flow rate and high road smoothness, and the second stage has a large flow rate and overflows at multiple intersections. ...
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The invention discloses an intersection signal timing method based on low-permeability networked vehicle trajectory data. The method comprises the following steps: constructing a low-permeability networked vehicle road network with an intersection signal timing optimization requirement based on an SUMO simulation platform; inputting data into the constructed road network, defaulting a traffic flow model defined by the SUMO simulation platform, designing a low-permeability networked vehicle road network scene, and simulating the road network traffic flow condition; in the simulated road network traffic flow condition, for each signal period, network connection vehicle track data is randomly selected as sample data, and the selected network connection vehicle track data accounts for 3%-5% of the whole road network traffic flow track data; determining a traffic signal plan of a next signal period at the end of a previous signal period according to the selected networked vehicle trajectory data; signal timing of the road network in the SUMO simulation platform is modified according to the traffic signal plan of the next signal period until simulation is finished, and the problems of preventing intersection overflow, relieving road network congestion and the like are achieved.
Description
technical field [0001] The invention relates to an intersection signal timing method based on low-permeability Internet-connected vehicle trajectory data, and belongs to the technical field of traffic behavior analysis and data processing. Background technique [0002] In urban roads, intersections are the "hardest hit areas" caused by congestion. During peak hours, overflow occurs when the number of vehicles entering an intersection approach is greater than the carrying capacity of the approach. Queue overflow usually occurs when the queue exceeds the length of the road section. Once the overflow control is not timely, the congestion may spread from a single intersection to the upstream, downstream and adjacent intersections, greatly reducing the traffic efficiency of the urban road network. In order to achieve effective control of traffic flow, effectively alleviate the overflow problem at intersections under large traffic conditions, and improve the overall transportatio...
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IPC IPC(8): G08G1/01G08G1/07
CPCG08G1/0145G08G1/07
Inventor 韩雨黄亚琴刘攀
Owner SOUTHEAST UNIV