Heavy-cargo road transportation route optimization method taking road intersection steering into consideration

A technology of intersection and optimization method, applied in the field of intelligent transportation, can solve the problems of inconvenient steering and time-consuming of large trucks, and achieve the effect of shortening running time, avoiding time-consuming, reliable theoretical basis and technical support

Inactive Publication Date: 2015-12-23
WUHAN UNIV
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Problems solved by technology

At the intersection of urban road networks, the steering of large trucks, especially articulated trucks, will become extremely inconvenient, and it will take more time than ordinary cars

Method used

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  • Heavy-cargo road transportation route optimization method taking road intersection steering into consideration
  • Heavy-cargo road transportation route optimization method taking road intersection steering into consideration
  • Heavy-cargo road transportation route optimization method taking road intersection steering into consideration

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Embodiment Construction

[0057] The technical solutions and beneficial effects of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0058] figure 1 Provides a specific calculation method for the size of the turning angle when the vehicle turns at the intersection. In the figure, N and E indicate the directions of due north and due east respectively, and O indicates an intersection, is the direction of travel before the vehicle turns, Figure (a) and figure (b) represent the steering diagram when the vehicle turns left, and diagrams (c) and (d) represent the steering diagram when the vehicle turns right. Assuming direction of vehicle travel before turning The angle with true north is Φ A , the direction of travel after turning The angle with true north is Φ B , the constructed corner model is as follows:

[0059]

[0060] In the case shown in figure (a), Φ A ∈(-180°,-90°], Φ B ∈[90°,180°), at this time the vehi...

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Abstract

The invention discloses a heavy-cargo road transportation route optimization method taking road intersection steering into consideration. The method comprises the following steps: step one, constructing a road network data model based on the original road coverage data; step two, constructing a road corner weight auxiliary network based on the road network data model, and applying the weight on the auxiliary side in the road corner weight auxiliary network; step three, generating a network data set based on the road corner weight auxiliary network, setting a target function by considering path intersection steering total weight and path total length, analyzing the network data set by adopting the shortest path analysis method to obtain the optimal path; and step four, by the combination of the corner direction, backstepping the optimal path obtained in the step three into the road network data model, thus obtaining the real optimal path. According to the method, the traffic pressure of a heavy-cargo transportation vehicle on the road intersection can be effectively alleviated, and the integral running time of the heavy-cargo transportation vehicle on the road can be shortened, so that the method conforms to the demands on the complexity of the internal part of the road network.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and in particular relates to a method for optimizing highway large-scale transportation routes in consideration of turning at road intersections. Background technique [0002] With the rapid development and intensification of construction in my country's electric power, energy, chemical, building materials and other industries, the large-scale transportation industry has also developed accordingly. Compared with traditional transportation methods, oversized transportation refers to the transportation of large-scale equipment that is oversized, oversized, and overweight. The solution can greatly improve the efficiency of transportation operations. As the main transportation mode of large-scale transportation, road transportation is not only flexible, but also can directly transport the equipment to the site, avoiding the unlucky link of other transportation methods, and effecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/0968G01C21/34
Inventor 孟令奎胡正华黄长青张文周杨
Owner WUHAN UNIV
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