Cited by 322Urban Design and Spatial AnalysisRegional Economics and Spatial AnalysisComplex Network Analysis Techniques

Elementary processes governing the evolution of road networks

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Strano, Emanuele, Nicosia, Vincenzo, Latora, Vito, Porta, Sergio, Barthélemy, Marc·2012·Scientific Reports

Abstract

Urbanisation is a fundamental phenomenon whose quantitative characterisation is still inadequate. We report here the empirical analysis of a unique data set regarding almost 200 years of evolution of the road network in a large area located north of Milan (Italy). We find that urbanisation is characterised by the homogenisation of cell shapes, and by the stability throughout time of high-centrality roads which constitute the backbone of the urban structure, confirming the importance of historical paths. We show quantitatively that the growth of the network is governed by two elementary processes: (i) 'densification', corresponding to an increase in the local density of roads around existing urban centres and (ii) 'exploration', whereby new roads trigger the spatial evolution of the urbanisation front. The empirical identification of such simple elementary mechanisms suggests the existence of general, simple properties of urbanisation and opens new directions for its modelling and quantitative description.

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  • The primary graph method represents junctions in street networks as nodes, and the street segments that connect junctions as edges.

    “This method represents junctions in street networks as nodes, and the street segments that connect junctions as edges (Eichler et al. 2013;Strano et al. 2012 andBarthelemy 2011).”

    From A Network Approach to Link Visibility and Urban Activity Location (2018) · cites this paper as Strano et al. 2012

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Research works printed but not linked: 1

  1. Alexander C. The Nature of Order: an essay on the art of building and the nature of the universe. Book 2, The Process of Creating Life (Oxford University Press, Oxford, UK, 2003).

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Authors
Strano, E., Nicosia, V., Latora, V., Porta, S., & Barthélemy, M.
Affiliations
  • University of Strathclyde (GB)
  • University of Cambridge (GB)
  • University of London (GB)
  • Centre National de la Recherche Scientifique (FR)
Corresponding author
Barthélemy, Marc
Venue
Scientific Reports
Published
2012-03-01
Volume
2
Issue
1
Pages
296-296
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2152058154
Cited by
321
References
44
Citations by year
2026: 21 · 2025: 14 · 2024: 12 · 2023: 17 · 2022: 30 · 2021: 20 · 2020: 33 · 2019: 30 · 2018: 32 · 2017: 20 · 2016: 17 · 2015: 30 · 2014: 26 · 2013: 19
FWCI
45.30
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion)
Topics
  • Physical Sciences › Engineering › Building and Construction › Urban Design and Spatial Analysis
  • Social Sciences › Economics, Econometrics and Finance › Economics and Econometrics › Regional Economics and Spatial Analysis
  • Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Complex Network Analysis Techniques
Keywords
road network, urbanization, urban expansion, network densification, exploration process, historical paths, network growth mechanisms, urban structure

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