An investigation of the effects of critical infrastructure on urban mobility in the city of MedellĂ­n
Journal article, 2015

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 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.

urban mobility

heuristics

shortest path

user equilibrium

traffic assignment

critical infrastructures

Author

Miguel Jaller

University of California

Carlos Gonzalez-Calderon

Rensselaer Polytechnic Institute

Wilfredo Yushimito

Universidad Adolfo Ibanez

Ivan Sanchez-Diaz

Chalmers, Technology Management and Economics, Logistics & Transportation

International Journal of Critical Infrastructures

1475-3219 (ISSN) 1741-8038 (eISSN)

Vol. 11 3 213-232

Gothenburg Urban Freight Platform

VREF, 2014-02-01 -- 2019-12-31.

Areas of Advance

Transport

Subject Categories

Transport Systems and Logistics

DOI

10.1504/IJCIS.2015.072158

More information

Latest update

12/20/2019