Description

Studying accessibility, including the resilience of city transportation networks, is critical to understand how these networks influence individuals’ mobility and lives. This study developed an analytical research framework to examine the resilience of accessibility to emergency and lifesaving facilities under the threats of natural hazards such as earthquakes and wildfires. With a cumulative-opportunity approach, the authors measured accessibility by counting emergency and lifesaving facilities (including parks, schools, hospitals, roads, and fire stations) that can be reached by driving at the census tract level in San Fernando Valley, CA. With the calculated accessibility, the authors run simulations to collect data showing what would happen if an area were affected by a selected disaster. They then used statistical analysis to identify those areas where accessibility is significantly reduced compared to the original status. A normalized difference accessibility index (NDAI) was further created to suggest plans and strategies to help those vulnerable areas through adding facilities/services or improving transportation infrastructure.

Publication Date

5-2022

Publication Type

Report

Topic

Active Transportation

Digital Object Identifier

10.31979/mti.2022.2126

MTI Project

2126

Keywords

Natural hazards, Accessibility, Resilience, Hotspot analysis, Statistical comparison

Disciplines

Infrastructure | Transportation | Transportation Engineering

Additional Files
2126-Wang-RB-Lifesaving-Facilities-Natural-Hazards.pdf (697 kB)
Research Brief
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