Safe System Research and Implementation: Final Report

Details

• Creators:
  Banerjee, Ipsita ; Luo, Qianhua ; Champlin, Jacob ; Griswold, Julia ; Mitman, Meghan
• Corporate Creators:
  University of California, Berkeley. Safe Transportation Research and Education Center
• Corporate Contributors:
  California. Department of Transportation
• Subject/TRT Terms:
  Cable Barriers Cables Countermeasures Energy Fatalities Highway Design Implementation Intersections Kinetic Energy Literature Reviews Roundabouts Safe System

  More +
• Publication/ Report Number:
  CA25-4014
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; California
• Edition:
  Final Report: 7/2022 to 3/2025
• Corporate Publisher:
  University of California, Berkeley. Safe Transportation Research and Education Center
• Abstract:
  Fatal and serious injury (FSI) crashes in California have increased by 51.9% in the past decade. To curb this growth, Director’s Policy 36 was issued for Caltrans to adopt the Safe System Approach, an approach that has proven to reduce FSI crashes by large margins in countries and cities that have adopted it. Following this, two Safe System-aligned countermeasures, cable-barriers and roundabouts, are evaluated to assess the obstacles towards their wider implementation in California. Next, training material and curriculum were created on Safe System, and some entry-level trainings of Caltrans were reviewed to assess compatibility with the Safe System Approach. In this effort, a key contribution was creating Caltrans’s Safe System Framework, which builds on the Safe System Pyramid and the FHWA Road Design hierarchy concept of ordering interventions based on effectiveness. Finally, following a literature review of the state of the art in kinetic energy assessment models of intersections and risk-based network screening, a spreadsheet-based model was created based on FHWA’s Safe System for Intersections. Further work on this was suspended to avoid duplication, as FHWA proceeded to create a spreadsheet-based tool on that model. Further research needs, to enable Caltrans to reach its goal of zero FSI crashes by 2050, were identified.
• Format:
  PDF
• Funding:
  65A0960
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:a257ab64f6c181bc28a9424581a929b9db396a0c6e9fffe7990204127597f6da23f1403e9181db9b983520b48e32e634ffaafc9570c0e009748bd65b019b12ac
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/86981/dot_86981_DS1.pdf
• File Type:
  [PDF - 3.51 MB ]