A Methodology for Operational Performance Assessment of Two-Lane Highway Facilities

Transportation professionals have indicated that a facility-based evaluation methodology for two-lane highways would be much more useful and practical to them than just the individual segment and point analysis methodologies. A facility level analysis will allow the various features (e.g., isolated intersections, continuous grades, passing lanes) that are typical to an extended length of two-lane highway to be addressed in a combined analysis with a single performance measure and level of service value resulting. Currently there is not any operational analysis methodology to address two-lane highways with different segment types at the facility level. The scope of analysis provided in the Highway Capacity Manual (HCM) 2000 for two-lane highways is limited to a single segment within the facility. This paper describes an effort to develop a methodology for the operational analysis of a two-lane highway that includes occasional isolated signalized intersections. The developed methodology provides a model for the basic structure of a facility level analysis that will be amenable to the incorporation of a variety of segment types. The methodology also maintains some fidelity to the HCM by using the existing methodologies for the two-lane highway segments and intersections. In this methodology, an individual segment within the facility is not regarded as an isolated segment as the impacts between segments are taken into account. A unified facility-level delay-based measure (percent delay) is used for each segment and point of the entire facility.


  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; References; Tables;
  • Pagination: 23p
  • Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

Filing Info

  • Accession Number: 01049571
  • Record Type: Publication
  • Report/Paper Numbers: 07-0457
  • Files: TRIS, TRB
  • Created Date: Feb 8 2007 5:02PM