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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2018  >  18(2): 101-110
WANG Shi-guang, YU De-xin, WANG Shu-xing, XING Ru-ru, LI Zhi-lin. Connectivity characteristics of urban road network elements based on improved degree[J]. Journal of Traffic and Transportation Engineering, 2018, 18(2): 101-110. doi: 10.19818/j.cnki.1671-1637.2018.02.011
Citation: WANG Shi-guang, YU De-xin, WANG Shu-xing, XING Ru-ru, LI Zhi-lin. Connectivity characteristics of urban road network elements based on improved degree[J]. Journal of Traffic and Transportation Engineering, 2018, 18(2): 101-110. doi: 10.19818/j.cnki.1671-1637.2018.02.011
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Connectivity characteristics of urban road network elements based on improved degree

doi: 10.19818/j.cnki.1671-1637.2018.02.011
  • 1.

    School of Transportation, Jilin University, Changchun 130022, Jilin, China

  • 2.

    Jilin Research Center for Intelligent Transportation System, Jilin University, Changchun 130022, Jilin, China

  • 3.

    Jilin Province Key Laboratory of Road Traffic, Jilin University, Changchun 130022, Jilin, China

  • 4.

    Shandong Hi-Speed Company Limited, Jinan 250014, Shandong, China

  • 5.

    Traffic Management Research Institute of the Ministry of Public Security, Wuxi 214151, Jiangsu, China

More Information
  • Author Bio:

    WANG Shi-guang(1992-), male, doctoral student, wsg_its@163.com

    YU De-xin(1972-), male, professor, PhD, yudx@jlu.edu.cn

  • Received Date: 2017-09-18
  • Publish Date: 2018-04-25
    Abstract
  • Combined with the lane properties (number, width, direction, etc.) of urban road network, the definition of degree in complex network was extended. The connectivity characteristics of road network elements including roads and intersections were analyzed by using primal and dual approaches respectively.Considering the features of real road network and resident trip cognition, intersections were regarded as nodes, and roads were determined by named street approach and stroke-like analysis from the perspective of resident cognition.Thelane number of motor vehicle was emphasized to improve the concept of degree.Under the new definition of network elements, the connectivity characteristics of intersections and roads were analyzed by using the method of average nearest neighbors'degree based on the improved measures.Considering the deficiency of existing method, the concept of link coefficient was proposed so that a more clear connectivity characteristic was found.The main urban zone of Xiamen City was regarded as an example, the connectivity characteristics of road network were analyzed to validate the analysis method.Analysis result shows that the city's intersection and road element networks are both scale-free networks, and the power exponents are 1.69 and 2.70, respectively.The clear segmentation features are exhibited with the boundaries of particular points.Among them, the threshold values of link coefficients based on improved degree are 3.40 and 8.33, separately.The threshold value of hierarchical measure of roads is 5, and the threshold value of link coefficient based on the hierarchical measure is 3.From the point of view, it is shown that the urban road network is not simple assortative or disassortative network.The proposed analysis method of connectivity characteristics of urban network elements is of great significance for recognizing the topologic properties of urban road network and building network evolution model.11 figs, 29 refs.

     

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