The network analysis of urban streets: a dual approach

S. Porta, P. Crucitti, V. Latora

Research output: Contribution to journalArticle

420 Citations (Scopus)

Abstract

The application of the network approach to the urban case poses several questions in terms of how to deal with metric distances, what kind of graph representation to use, what kind of measures to investigate, how to deepen the correlation between measures of the structure of the network and measures of the dynamics on the network, what are the possible contributions from the GIS community. In this paper, the author considers six cases of urban street networks characterized by different patterns and historical roots. The authors propose a representation of the street networks based firstly on a primal graph, where intersections are turned into nodes and streets into edges. In a second step, a dual graph, where streets are nodes and intersections are edges, is constructed by means of a generalization model named Intersection Continuity Negotiation, which allows to acknowledge the continuity of streets over a plurality of edges. Finally, the authors address a comparative study of some structural properties of the dual graphs, seeking significant similarities among clusters of cases. A wide set of network analysis techniques are implemented over the dual graph: in particular the authors show that the absence of any clue of assortativity differentiates urban street networks from other non-geographic systems and that most of the considered networks have a broad degree distribution typical of scale-free networks and exhibit small-world properties as well.
Original languageEnglish
Pages (from-to)853-866
Number of pages13
JournalPhysica A: Statistical Mechanics and its Applications
Volume369
Issue number2
DOIs
Publication statusPublished - 15 Sep 2006

Keywords

  • structure of complex networks
  • scale-free networks
  • urban streets
  • dual approach

Activities

  • 1 Organiser of major conference

Evolution of Complex Transportation Networks

Sergio Porta (Organiser)

29 Aug 201130 Aug 2011

Activity: Participating in or organising an event typesOrganiser of major conference

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