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Diagnostic technique for road network key nodes

A key node and road network technology, applied in the traffic control system of road vehicles, special data processing applications, instruments, etc., can solve problems such as not considering traffic flow factors, and achieve the effect of increasing stability

Inactive Publication Date: 2012-07-18
TSINGHUA UNIV
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  • Claims
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Problems solved by technology

[0006] Aiming at the shortcomings mentioned in the above background technology that the existing method for determining the key nodes of the road network does not consider the factors of traffic flow, the present invention proposes a method for diagnosing the key nodes of the road network

Method used

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  • Diagnostic technique for road network key nodes
  • Diagnostic technique for road network key nodes
  • Diagnostic technique for road network key nodes

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Embodiment Construction

[0029] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0030] In recent years, due to the continuous increase of the road network load and the extremely fragile traffic system, the risk and frequency of various emergencies causing large-scale traffic congestion and causing large-scale traffic paralysis are increasing. It is often a normal heavy snow or summer A rainstorm here can paralyze the traffic of the entire road network. Therefore, by studying the key nodes of the road network and protecting them, it is possible to prevent the road network from being paralyzed due to emergencies at these nodes, or to take timely measures to reduce the impact on the road network after the emergency occurs, and increase road safety. The smoothness of the network.

[0031] Aiming at ...

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Abstract

The invention discloses a diagnostic technique for road network key nodes, which belongs to the technical field of urban road network planning. The steps include: firstly calculating geometric topological numerical values of the nodes; secondly, calculating traffic volume of the nodes; performing ranking calculation for the nodes and finally obtaining the ranking of the nodes and the key nodes. According to the diagnostic technique for road network key nodes, after the key nodes are confirmed, the key nodes can be protected, and measures of traffic flow limiting, traffic diversion or zonal charging and the like are adopted so as to improve the stability of the road network.

Description

technical field [0001] The invention belongs to the technical field of urban road network planning, and in particular relates to a key node diagnosis technology of the road network. Background technique [0002] In the field of transportation, the concept of traffic demand management has been proposed to solve urban traffic problems from two aspects of supply and demand and management. On the one hand, in order to reasonably guide urban residents to travel and alleviate traffic congestion, it is necessary to implement urban traffic volume control management and formulate scientific traffic development policies; on the other hand, in order to continuously tap the city's traffic supply capacity, scientific traffic engineering must be implemented means. Which road sections or intersections on the road network are the bottlenecks of the current road network is the key to the planning, construction and evaluation of the urban road network. The road network nodes that need to be...

Claims

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Application Information

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IPC IPC(8): G08G1/00G06F19/00
Inventor 吴建平杨筱娟周杨贾宇涵
Owner TSINGHUA UNIV
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