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    Right-Turn-on-Red Flow Profile Impactson Urban Street Capacity Analysis

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    Hale_NAS_2016.pdf (5.253Mb)
    Issue Date
    2016
    Author
    Hale, David K.
    Ma, Jiaqi
    Kondyli, Alexandra
    Hu, Jia
    Huang, Zhitong
    Su, Peng
    Publisher
    National Academy of Sciences
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Rights
    © 2016 National Academy of Sciences
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    Abstract
    The Highway Capacity Manual 2010 (HCM 2010) contains computational procedures for evaluating traffic operational efficiency of urban street segments. These procedures have been implemented within several commercial software packages and are likely used by thousands of engineers and planners across the United States. The procedures for urban street capacity analysis contain no logic for handling right turns on red (RTORs) or for handling special cases of RTORs such as shielded and free right turns. A new proposed RTOR modeling framework is described for urban streets in the HCM 2010. When significant upstream RTOR flows exist, the proposed logic is designed to generate more realistic flow profiles. Three types of experimental results are presented: they demonstrate the improved modeling accuracy of the proposed logic. First, it is shown that macroscopic flow profile shapes are now more visually sensible because they now illustrate RTOR flows moving at the appropriate times. Second, macroscopic flow profile shapes are now more consistent with microscopic vehicle trajectories. Third, a statistical analysis shows that when the proposed logic is used, HCM 2010 performance measures become more consistent with the performance measures generated by microsimulation. Finally, case study results show that when the proposed RTOR logic is not used, control delays are sometimes be inaccurate by more than 30%. Given the experimental evidence presented, it is urgent that the proposed improvements be adopted and implemented so that RTOR corridors can be accurately analyzed by the HCM 2010 procedures.
    URI
    http://hdl.handle.net/1808/25326
    DOI
    https://doi.org/10.3141/2553-04
    Collections
    • Civil, Environmental & Architectural Engineering Scholarly Works [129]
    Citation
    Hale, D. K., Ma, J., Kondyli, A., Hu, J., Huang, Z., & Su, P. (2016). Right-Turn-on-Red Flow Profile Impactson Urban Street Capacity Analysis. Transportation Research Record: Journal of the Transportation Research Board, 2553, 29-40. doi:10.3141/2553-04

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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