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Road node recognition method and device

An identification method and node technology, applied in the field of intelligent transportation, can solve problems such as not much research, difficult to obtain traffic flow data, and inability to accurately determine the traffic bottleneck of the traffic network

Active Publication Date: 2017-06-27
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, most of the current traffic bottleneck identification methods are aimed at an independent object in the traffic network such as a single road section, a single intersection or a transfer point, and there are not many researches on bottlenecks in the traffic network systematically and holistically.
The main problem of traffic bottleneck identification based on actual data is that the actual traffic flow data is not easy to obtain, and the real-time and large-scale data acquisition cannot meet the analysis requirements, so the implementation of the method is relatively difficult; other methods cannot be done. To the quantification of traffic bottlenecks; in the simulation-based method, the randomness of vehicles arriving at the traffic network is not considered, and the stochastic process model is not used to describe the traffic flow, which does not match the actual traffic flow, resulting in inaccurate traffic flow models
All in all, there is currently no easy and accurate method to identify traffic bottlenecks in the traffic network

Method used

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  • Road node recognition method and device

Examples

Experimental program
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no. 1 example

[0076] Such as figure 1 As shown, the first embodiment of the present invention provides a method for identifying road nodes, which includes:

[0077] Step S101, constructing a traffic network including multiple road nodes.

[0078] In the first embodiment of the present invention, the above-mentioned traffic network includes a plurality of road nodes, and these road nodes can be divided into three categories. The first type is the starting road node that generates traffic flow, the second type is the ending road node that attracts traffic flow, and the third type is the intermediate road node between the starting road node and the ending road node. Wherein, every line segment between two adjacent road nodes is called a road segment, and each road segment has its own capacity (the capacity can be set according to experience value). Here, in order to describe the above transportation network more clearly, the following figure 2 A schematic diagram of the transportation netw...

no. 2 example

[0106] Such as Figure 8 As shown, the second embodiment of the present invention provides a road node identification device, the identification device includes:

[0107] A construction module 801, configured to construct a traffic network comprising a plurality of road nodes;

[0108] The first acquisition module 802 is configured to acquire traffic flow data in the traffic network;

[0109] The second obtaining module 803 is used to obtain the stay time of the label of the vehicle on the road node in the traffic network;

[0110] The simulation module 804 is used to simulate the propagation process of the label of the vehicle in the traffic network according to the traffic flow data and the duration of stay to obtain the simulation result;

[0111] The determining module 805 is configured to determine a road node as a traffic bottleneck from a plurality of road nodes according to the simulation result.

[0112] Wherein, the first acquisition module 802 includes:

[0113]...

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Abstract

The embodiment of the invention provides a road node recognition method and device, and the method comprises the steps: building a traffic network comprising plurality of road nodes; obtaining the traffic flow data in the traffic network; obtaining the stay time of a vehicle label in the traffic network at the road node; simulating the propagation process of the vehicle label in the traffic network according to the traffic flow data and the stay time, and obtaining a simulation result; determining the road node serving as the traffic bottleneck from the plurality of road nodes according to a simulation result. According to the embodiment, the method can achieve the systematic and comprehensive research of the traffic bottleneck in the traffic network, and determines the traffic bottleneck in the traffic network simply and accurately.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a road node identification method and device. Background technique [0002] With the continuous and rapid increase of urban vehicles, urban traffic congestion continues to aggravate. Traffic congestion has become the focus of common attention and a problem that needs to be solved urgently in all countries in the world. Among them, there are many causes of traffic congestion, and the unreasonable traffic network structure and design layout are the root causes of traffic congestion. The traffic network is a whole formed by the close connection of road sections and intersections. Due to the unreasonable traffic network structure and facility layout, many potential traffic bottlenecks are hidden in the road network. Due to the destruction of hardware facilities, bad weather, traffic accidents and other events, some roads are severely blocked, and the interconnecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01
Inventor 鲍媛媛
Owner CHINA MOBILE COMM GRP CO LTD