Graph Representation of the 15-Minute City: A Comparison between Rome, London, and Paris

Lorenzo Barbieri, Roberto D’Autilia (), Paola Marrone and Ilaria Montella
Additional contact information
Lorenzo Barbieri: Dipartimento di Architettura, Università Roma Tre, 00153 Rome, Italy
Roberto D’Autilia: Dipartimento di Matematica e Fisica, Università Roma Tre, 00146 Rome, Italy
Paola Marrone: Dipartimento di Architettura, Università Roma Tre, 00153 Rome, Italy
Ilaria Montella: Dipartimento di Architettura, Università Roma Tre, 00153 Rome, Italy

Sustainability, 2023, vol. 15, issue 4, 1-14

Abstract: We studied the structure of the 15-minute city by measuring the distances from the services on spatial graphs. While the concept of the 15-minute city is rapidly spreading, its operative definition can be of help for planning and understanding the possibilities of the general idea. For three European cities (Rome, Paris, and London), we developed a method to calculate pedestrian travel time to reach services for all the possible paths on urban graphs, finding that the 15-minute city generally has multiple connected components and that the services have not necessarily been part of it. This algorithm was used to to make a quantitative comparison between the cities, showing that Paris and London have a stronger 15-minute characterization than Rome. By generalizing the method, it was possible to define a 15-minute urban index, which quantitatively characterizes this city feature. The results seem to be promising because, at the cost of the massive use of computational time, a digital model for the city can be generated: a planning tool to simulate urban solutions and a rigorous criterion for evaluating how much a city can be considered a 15-minute city.

Keywords: 15-minute city; spatial graph; 15-minute city index; digital twin (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.mdpi.com/2071-1050/15/4/3772/pdf (application/pdf)
https://www.mdpi.com/2071-1050/15/4/3772/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2023:i:4:p:3772-:d:1073095

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().