Comparison of Two Protected-Permitted Lead-Lag Left-Turn Phasing Arrangements

Details

• Creators:
  Fambro, Daniel B. ; Gaston, Gilmer D. ; Hoff, Christopher M.
• Corporate Creators:
  Texas Transportation Institute. Texas A&M University
• Corporate Contributors:
  Texas State Department of Highways and Public Transportation
• Subject/TRT Terms:
  • Lead-lag phasing
  • Left turns
  • Exclusive phasing
  • Alternatives analysis
  • Arterial highways
  • Exclusive permissive phasing
  • Field studies
  • Operations
  • Stopped time delays
  • Streets
  More +
• Publication/ Report Number:
  TX-91/0989-lF
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas ; United States
• Edition:
  Final Report: August, 1989 - May, 1991
• Corporate Publisher:
  Texas Transportation Institute. Texas A&M University
• Abstract:
  This report documents an analysis of the operations of a special type of lead-lag left-tum phasing sequence developed and used by traffic engineers in Dallas and Richardson, Texas. This phasing, known as the Dallas phasing, is prohibited by existing standards for left-tum phasing set forth in the Manual for Uniform Traffic Control Devices (MUTCD). The objective of this research was to use field and simulation data to evaluate the operational characteristics and benefits of this type of left turn phasing arrangement. Operational data were collected at four intersections in the Dallas area that utilized the phasing. Measured and predicted stopped delays were used as the primary operational measures of comparison.
• Format:
  PDF
• Funding:
  2-18-89-0989
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/83813/dot_83813_DS1.pdf
• File Type:
  [PDF - 4.80 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:4e805b840e7dea1f8fd2cd188c29a8b5fb2e5e222cd231f53231729179aafd4339dfe3d05d2b860df1bc14f53466fae655fbb75ab08bf65919e8b08c68e7ebee