Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Unidirectional Pedestrian Circulation: Physical Distancing in Informal Settlements

Version 1 : Received: 27 October 2020 / Approved: 29 October 2020 / Online: 29 October 2020 (08:44:21 CET)

How to cite: Fernandez Gonzalez, J.; Gongal, A. Unidirectional Pedestrian Circulation: Physical Distancing in Informal Settlements. Preprints 2020, 2020100598 (doi: 10.20944/preprints202010.0598.v1). Fernandez Gonzalez, J.; Gongal, A. Unidirectional Pedestrian Circulation: Physical Distancing in Informal Settlements. Preprints 2020, 2020100598 (doi: 10.20944/preprints202010.0598.v1).

Abstract

The COVID-19 pandemic has resulted in a wide range of spatial interventions to slow down the spread of the virus. The spatial limitations of narrow public circulation spaces within informal settlements, which house over one billion people around the world, make it impossible for pedestrians to practice physical distancing (or social distancing). In this paper, we propose a flexible mathematical method, named the Cluster Lane Method, for turning a planar circulation network of any size or complexity into a network of unidirectional lanes, making physical distancing possible in narrow circulation spaces by limiting face-to-face interactions. New notions and theorems about oriented graphs in graph theory are introduced. The paper ends with a discussion of the potential implementation of this cost-efficient, low-tech, sustainable solution, and with the introduction of a novel unidirectional tactile paving for the visually impaired.

Subject Areas

circulation; informal settlements; COVID-19; coronavirus; physical distancing; social distancing; graph theory; oriented graph; cluster graph; urban planning; architecture; Königsberg; Dharavi; Christopher Alexander; slum; favela

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