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Empirical features of weaving sections

Al-Jameel, HAE 2011, Empirical features of weaving sections , in: 10th International Postgraduate Research Conference (IPGRC), 14-15 th September, Mary Seacole Building, The University of Salford, Salford, Greater Manchester, England, UK.

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      Abstract

      A motorway weaving section is a segment of the road in which an on-ramp is followed by an off-ramp with limited spacing between them. Various equations have been adopted to determine the capacity of such weaving sections. Some of these include factors such as weaving ratio (R), volume ratio (VR) and weaving configuration, all of which influence the weaving capacity. For this paper, drivers’ behaviours at weaving sections were studied in order to assess the effect on capacity of such sections and to aid in the development of a micro-simulation model to evaluate the performance of these sections for various configurations. Factors such as VR, R, the upstream traffic characteristics, the frequency of lane changes (FLC), the percentage of the pre-segregation for the upstream traffic of weaving section, the length of weaving section and a merging point were investigated. For this purpose seven weaving sites with different configurations and lengths were selected. The results of the analysed data indicated that the FLC differed according to the configuration of the weaving section. For example, in the case of ramp weaving sections (i.e. lane gain/lane drop), the results indicated that the maximum FLC in every 76 metres (i.e. equivalent to 250 feet) within the weaving section is up to 1500 per hour. This value was found to be much higher than those reported in other studies. In addition, the effective length that was used by those weaving vehicles was also influenced by the type of weaving configuration. For short weaving sections (i.e. 150 metres or less) the effective length is basically the whole length, whereas, for relatively longer weaving sections (i.e. 300 metres or more), the effective length is found to be equal to 200 metres or less

      Item Type: Conference or Workshop Item (Paper)
      Themes: Subjects outside of the University Themes
      Schools: Colleges and Schools > College of Science & Technology
      Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering
      Journal or Publication Title: 10th International Postgraduate Research Conference (IPGRC)
      Publisher: The University of Salford
      Refereed: Yes
      Depositing User: HAE Al-Jameel
      Date Deposited: 21 Sep 2011 09:33
      Last Modified: 20 Aug 2013 18:09
      URI: http://usir.salford.ac.uk/id/eprint/17658

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