2+1 Road With Barrier Evaluation of the Feasibility of Deployment of Swedish 2+1 Road With Barrier in Colorado

Details

• Creators:
  Sarchet, Rich ; Williams, Jim ; Kononov, Jake
• Corporate Creators:
  DiExSys, LLC
• Corporate Contributors:
  Colorado. Department of Transportation. Applied Research & Innovations Branch ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Traffic safety
  • Two lane highways
  • Evaluation
  • Feasibility analysis
  • Deployment
  • Traffic barriers
  • Implementation
  • Highway design
  • Median barriers
  • Construction
  More +
• Publication/ Report Number:
  CDOT-2020-05
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Colorado
• Edition:
  Final Report
• Corporate Publisher:
  Colorado Department of Transportation. Applied Research & Innovations Branch
• Abstract:
  Deployment of 2+1 Road with Barrier in Colorado certainly has potential to improve safety. How much safety benefit to expect, however, is, so far, somewhat uncertain. The Swedish design is widely implemented and has a record of success, so proposed Colorado Design is substantially based on it, with some modifications recommended to better reflect US driver expectancy. Study developed criteria for identifying locations with potential for implementation, screened Colorado highway network for such locations, identified 11 of them, estimated safety benefits and construction costs and ranked projects by B/C. Existing access is a challenge with introducing median barrier. This report examines proposed project locations including both the existing safety problem and the problem of existing access, and proposes possible resolutions to the access concerns. 2+1 Road with Barrier was found likely to be feasible at all 11 locations, with B/C varying between 1.56 and 9.51.
• Format:
  PDF
• Funding:
  318.01
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/88633/dot_88633_DS1.pdf
• File Type:
  [PDF - 6.37 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:bbce0115ee7e5a569e396c337052c0938e1e4bea3e1c40f5f0e00bb7ccb2a5398a0032e6f1a4d406bf395f0cd3b3d8f820b2d38552e8215868f8a52834e698c6