OPERATION OF WEAVING AREA UNDER NON-FREEWAY CONDITIONS. PHASE I INTERIM REPORT

Freeway weaving is defined by the 1985 Highway Capacity Manual as "the crossing of two or more traffic streams traveling in the same direction along a significant length of highway without the aid of traffic control devices". The 1985 Highway Capacity Manual and its previous editions contain no treatment of weaving area operations on non-freeway facilities. Many non-freeway weaving categories have been identified and the following two categories were selected with the help of the New Jersey Department of Transportation for further analysis: 1) On/Off ramps connecting an arterial with a highway, and 2) Weaving caused by merging and diverging of ramps with an arterial. After reviewing all existing freeway weaving analysis models, the JHK, 1985 HCM, and FAZIO models were chosen for further evaluation and adaption to the non-freeway weaving conditions. Data were collected at a number of sites using the New Jersey Department of Transportation video-equipped vans, and were further reduced by graduate students for further analysis. The three models were used in their original and recalibrated format (using the statistical package SAS) in order to predict the average weaving and non-weaving speeds of traffic under non-freeway conditions. The results of the study indicated that the existing freeway models can not properly represent the non-freeway conditions, and that there is a need for developing new models to represent the operation of weaving areas under non-freeway conditions. Therefore, new models for predicting the average weaving and non-weaving speeds of traffic on non-freeway weaving areas for both categories of weaving were developed. The new models for both categories of weaving proved to be the best for predicting the average weaving and non-weaving speeds of traffic on non-freeway weaving areas.

  • Supplemental Notes:
    • Appendices B and C will be included in the Phase II Final Report.
  • Corporate Authors:

    University Transportation Research Center

    City College of New York
    Marshak Hall, Suite 910, 160 Convent Avenue
    New York, NY  United States  10031
  • Authors:
    • SADEGH, A
    • Pignataro, L J
    • Iqbal, M S
    • Bladikas, A
  • Publication Date: 1991-5

Language

  • English

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 44 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00668934
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 7 1994 12:00AM