Regensburg 2022 – scientific programme

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SOE: Fachverband Physik sozio-ökonomischer Systeme

SOE 15: Traffic Dynamics, Urban and Regional Systems

SOE 15.3: Talk

Wednesday, September 7, 2022, 17:45–18:15, H11

Urban road networks: Geometric characteristics and generative models — •Reik Donner — Hochschule Magdeburg-Stendal, Magdeburg, Germany — Potsdam Institute for Climate Impact Research, Potsdam, Germany

Urban road networks provide the spatial backbone of the development of cities. As planar networks, they possess characteristic size, shape and orientation distributions of their basic constituting elements (road segments and cellular structures). Comparisons with simple benchmark planar graph models show that the latter commonly fail to mimic those characteristic features of the real-world networks, including heavy-tailed object size distributions, specific shapes of node and cell degree distributions, and the predominant orthogonality of street patterns. In order to account for these discrepancies, I introduce a hierarchy of planar network models combining the successive evolution of the network with a perpendicular splitting of road segments controlled by a spatial potential function. The resulting model networks can be used as benchmarks for generating *surrogate cities* for further testing dynamical models of urban traffic.