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An investigation of the effects of critical infrastructure on urban mobility in the city of Medellín

An investigation of the effects of critical infrastructure on urban mobility in the city of Medellín Critical infrastructure refers to the type of facilities, services, and installations (e.g., transportation, communication, energy systems) that are essential for the functioning of a community, city or country. This paper describes the findings of the research conducted to identify the transportation network critical facilities (road links) and their impacts on urban mobility for the city of Medellin, the second largest city in Colombia. This paper analyses the negative effects on travel time when a facility is disrupted or the capacity is suddenly reduced (e.g., accident, natural or manmade disaster, dedicated bike-route, maintenance, and construction). Criticality is identified following two methodologies: 1) comparing the travel time of the network users solving Copyright © 2015 Inderscience Enterprises Ltd. M. Jaller et al. the user equilibrium (UE) traffic assignment problem between the base case and the disrupted network; 2) assessing the impact of the disrupted facility on the path travel times between affected origin-destinations zones. Keywords: critical infrastructure; urban mobility; traffic assignment; user equilibrium; heuristic; shortest path; Medellín; Colombia. Reference to this paper should be made as follows: Jaller, M., González-Calderón, C.A., Yushimito, W.F. and Sánchez-Díaz, I.D. (2015) ` in the city of Medellín', Int. J. Critical Infrastructures, Vol. 11, No. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Critical Infrastructures Inderscience Publishers

An investigation of the effects of critical infrastructure on urban mobility in the city of Medellín

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References (19)

Publisher
Inderscience Publishers
Copyright
Copyright © 2015 Inderscience Enterprises Ltd.
ISSN
1475-3219
eISSN
1741-8038
DOI
10.1504/IJCIS.2015.072158
Publisher site
See Article on Publisher Site

Abstract

Critical infrastructure refers to the type of facilities, services, and installations (e.g., transportation, communication, energy systems) that are essential for the functioning of a community, city or country. This paper describes the findings of the research conducted to identify the transportation network critical facilities (road links) and their impacts on urban mobility for the city of Medellin, the second largest city in Colombia. This paper analyses the negative effects on travel time when a facility is disrupted or the capacity is suddenly reduced (e.g., accident, natural or manmade disaster, dedicated bike-route, maintenance, and construction). Criticality is identified following two methodologies: 1) comparing the travel time of the network users solving Copyright © 2015 Inderscience Enterprises Ltd. M. Jaller et al. the user equilibrium (UE) traffic assignment problem between the base case and the disrupted network; 2) assessing the impact of the disrupted facility on the path travel times between affected origin-destinations zones. Keywords: critical infrastructure; urban mobility; traffic assignment; user equilibrium; heuristic; shortest path; Medellín; Colombia. Reference to this paper should be made as follows: Jaller, M., González-Calderón, C.A., Yushimito, W.F. and Sánchez-Díaz, I.D. (2015) ` in the city of Medellín', Int. J. Critical Infrastructures, Vol. 11, No.

Journal

International Journal of Critical Infrastructures – Inderscience Publishers

Published: Jan 1, 2015

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