The development of criteria for the treatment of right turn movements on rural roads.
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The development of criteria for the treatment of right turn movements on rural roads.

Filetype[PDF-3.37 MB]


  • English
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    • Creators:
      Cottrell, Benjamin H
    • Corporate Creators:
      Virginia Highway & Transportation Research Council
    • Subject/TRT Terms:
    • Publication/ Report Number:
      VHTRC 81-R45
    • Resource Type:
      Tech Report
    • Geographical Coverage:
      Virginia
    • Corporate Publisher:
      Virginia Transportation Research Council (VTRC)
    • Abstract:
      The objective of this research-was to develop criteria or guidelines for the treatment of right turn movements at nonsignalized intersections on rural roads. It was necessary for the criteria to be applicable for a wide range of conditions. A survey of state departments of transportation and Virginia Department of Highways and Transportation district traffic engineers identified the criteria presently used and the factors to be considered in establishing criteria. The decisions for right turn treatments are primarily based on judgment or rule of thumb. Field work identified the range of conditions and effectiveness of the treatments. The guidelines were developed through an analysis of the field data, the survey, and judgment. They are based on the peak hour (or design hour) volumes for right turn traffic and total traffic on the approach to the right turn treatment. Guidelines are available for 2-lane and 4-lane roadways. Other factors to be considered are noted. It is recommended that the guidelines, presented in this report be adopted by the Virginia Department of Highways and Transportation as an aid in selecting the appropriate treatment for right turn movements on rural roads.
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