Pilot In-service Performance Evaluation of Cable Barrier in Washington State

Details

• Creators:
  Abbott, Paul ; Manchas, Brad ; van Schalkwyk, Ida ; Donahue, John ; Mahugh, Jim
• Corporate Creators:
  Washington State Department of Transportation. Research Office
• Subject/TRT Terms:
  • Traffic
  • Cable cars
  • Pilot studies
  • Vehicle mix
  • Performance measurement
  • Traffic barriers
  • Cable barrier
  • In-service performance evaluation (ISPE)
• Publication/ Report Number:
  WA-RD 913.1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Washington ; United States
• Corporate Publisher:
  Washington (State). Dept. of Transportation. Office of Research and Library Services
• Description:
  A pilot routine in-service performance evaluation (ISPE) was undertaken for cable barrier following the process outlined in NCHRP 22-33. Barrier breach, rollover, vehicle mix, and secondary impacts on the roadside and roadway were evaluated as performance measures using data sourced from the Crash Location & Analysis System (CLAS) database and the WSDOT Engineering Crash Data Mart for years 2016 through 2020. Four Performance Assessment Levels, ranging from no exclusions of crash data to exclusions of crash data limited to vehicle type and speed limit were assessed. For all five performance measures, the study found no measurable difference between the performance of the four major types of cable barrier in use on state highways within WSDOT jurisdiction, including three-strand versus four-strand.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/66077/dot_66077_DS1.pdf
• File Type:
  [PDF - 1.37 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:2e9c562dca8a5ab9304cfd39cae1ba7d434244cd1a18b1048541384f06e1de79