English  |  正體中文  |  简体中文  |  Items with full text/Total items : 52048/87179 (60%)
Visitors : 8877493      Online Users : 304
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/96154

    Title: Potential applications of speed dispersion in defining freeway level of service and air emissions evaluation
    Authors: Chung, Chih-Lin;Recker, Will W.
    Contributors: 淡江大學運輸管理學系
    Keywords: 20140110
    Date: 2014-03-01
    Issue Date: 2014-03-05 09:50:52 (UTC+8)
    Publisher: Taylor & Francis
    Abstract: Speed dispersion, with respect to its statistical relationships with fundamental traffic flow parameters, is used to measure freeway level of service in the context of ‘no more than x% of vehicles with travel time up to y% greater than the free flow condition.’ It is argued that such a measure not only reflects mobility, reliability, and – potentially – safety, but also avoids the vague descriptions associated with each service level in the current US Highway Capacity Manual. These relationships are then applied to produce speed distribution estimates for the MOtor Vehicle Emissions Simulator (MOVES) model. It is argued that the MOVES model's approach limits the distribution in two speed bins, results in unsupported speed dispersion, and may cause identical distributions under various average speeds. The proposed revised approach based on speed dispersion generates specific spread-out distributions consistent with empirical data. The findings of these two applications bring new concepts to current practice.
    Relation: Transportation Planning and Technology 37(2), p.219-234
    DOI: 10.1080/03081060.2013.870793
    Appears in Collections:[運輸管理學系暨研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat
    Potential applications of speed dispersion in defining freeway level of service and air emissions evaluation.pdf762KbAdobe PDF0View/Open

    All items in 機構典藏 are protected by copyright, with all rights reserved.

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback