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Intersection life cycle cost comparison tool user guide version 1.0.
  • Published Date:
    2016-05-01
  • Language:
    English
Filetype[PDF-611.36 KB]


Details:
  • Corporate Creators:
    University of North Carolina (System). Institute for Transportation Research and Education
  • Resource Type:
  • Geographical Coverage:
    United States
  • Corporate Publisher:
    North Carolina. Dept. of Transportation
  • Format:
    PDF
  • Description:
    Developed with NCDOT

    The Intersection Life Cycle Cost Comparison Tool User Guide was developed as part of North

    Carolina Department of Transportation Research Project No. 2014‐11: Evaluation of Life Cycle

    Impacts of Intersection Control Type Selection.

    This spreadsheet‐based computational engine is designed to analyze the long‐term costs and

    benefits of NCDOT conversions of two‐way stop controlled intersections to other intersection

    types. It is designed to be used during the planning phase of potential intersection conversion

    projects to help stakeholders identify the most cost‐effective conversion configuration option.  

    This user‐friendly tool combines enhanced 2010 Highway Capacity Manual methodologies and

    standard cost benefit analysis methodologies to calculate the long‐term net benefits of

    converting a two‐way stop controlled intersections to three different alternatives: 1) all‐way

    stop controlled, 2) signalized, and 3) roundabout types. For the purpose of tool, a two‐way stop

    controlled (TWSC) intersection is defined as a four‐way intersection with no control mechanism

    for the main approach and stop signs positioned at the minor approach.

    Based on user inputs and standard state and national data, site‐specific construction and

    maintenance, user delay, and safety costs and benefits are calculated for each of the three

    conversion types. These costs and benefits are projected into the future using a methodology

    that considers the changing value of money over time. The resulting dollar figures can be

    compared to identify the intersection type that offers the greatest return on investment to

    North Carolina citizens over a user‐specified time period.

    Much of the material in this manual is in the accompanying instructional video at

    http://go.ncsu.edu/lcca_video.

  • Funding:
    Research Project No. 2014-11
  • Supporting Files:
    No Additional Files
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