Investigating the Resilience of Accessibility to Emergency and Lifesaving Facilities under Natural Hazards

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 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.

• Record URL:
  • https://doi.org/10.31979/mti.2022.2126
• Summary URL:
  • https://transweb.sjsu.edu/sites/default/files/2126-Wang-RB-Lifesaving-Facilities-Natural-Hazards.pdf
• Dataset URL:
  • https://rosap.ntl.bts.gov/view/dot/64563
• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/62353
• Supplemental Notes:
  • Supporting dataset available at: https://rosap.ntl.bts.gov/view/dot/64563
• Corporate Authors:

  Mineta Transportation Institute

  College of Business
  San José State University
  San Jose, CA  United States  95192-0219

  State of California

  Trustees of the California State University
  Long Beach, CA  United States 

  California Department of Transportation

  Sacramento, CA  United States  95819

  Department of Transportation

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Wang, Chih-Hao
  • Chen, Na
• Publication Date: 2022-5

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Maps; References;
• Pagination: 36p

Subject/Index Terms

• TRT Terms: Accessibility; Disaster resilience; Facilities; Statistical analysis
• Geographic Terms: San Fernando Valley (California)
• Subject Areas: Planning and Forecasting; Security and Emergencies; Transportation (General);

Filing Info

• Accession Number: 01847996
• Record Type: Publication
• Report/Paper Numbers: 22-21, CA-MTI-2126
• Contract Numbers: ZSB12017-SJAUX
• Files: NTL, TRIS, ATRI, USDOT, STATEDOT
• Created Date: Jun 6 2022 4:54PM