Rural road network performance and pre-disaster planning: an assessment methodology considering redundancy

This paper introduces a new methodology to evaluate the performance of rural road networks when a link in the network is disrupted due to events such as natural disasters, accidents, and maintenance closures. As a measure of network resilience, we propose a simpler approach to quantify redundancy by...

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Bibliographic Details
Published in:Transportation planning and technology 2021-10, Vol.44 (7), p.726-743
Main Authors: Shrestha, Jagat K., Pudasaini, Pramesh, Mussone, Lorenzo
Format: Article
Language:English
Subjects:
case study
connectivity index
Decision making
disruption
Emergency plans
Emergency preparedness
Natural disasters
network performance
Performance evaluation
Redundancy
redundancy index
Rural road network
Rural roads
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Summary:This paper introduces a new methodology to evaluate the performance of rural road networks when a link in the network is disrupted due to events such as natural disasters, accidents, and maintenance closures. As a measure of network resilience, we propose a simpler approach to quantify redundancy by introducing two indices that link the concept of road network redundancy with the increase in travel distance of the overall network when a road link fails. We apply the problem formulation to a real-world rural road network which was heavily affected by the 2015 Gorkha Earthquake in Nepal. Based on the results from our analyses, we found these indices easy to use, pragmatic, and reliable for the case under study. With the proposed tool, decision-makers can predict and monitor the performance of rural road networks for pre-disaster (or pre-disruption) planning, thereby ensuring the smooth connectivity for goods and services during emergencies.
ISSN:0308-1060
1029-0354
DOI:10.1080/03081060.2021.1956809