Both heavy goods vehicles (HGV) and exiting vehicles can significantly affect the entry capacity of a roundabout. However, their effects have not been taken into account in HCM 2000 model. Recently two studies have been carried out to address this issue: 1) Dahl and Lee (2012) proposed an expectation theory based approach to incorporate the effect of HGVs; and 2) Qu et al. (2013) derived a new roundabout capacity model by assuming that each exiting vehicle could provide one entry opportunity for waiting vehicles. In this paper, the two models are integrated using a scenario-based approach to analyse the effects of not only exiting vehicles but also HGVs. A comparative study indicates that HCM 2000 model performs well under low to mid traffic conditions while it underestimates the capacities under high traffic conditions in combination with high proportions of exiting vehicles.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Investigation on Entry Capacities of Single-Lane Roundabouts


    Contributors:
    Ren, Liang (author) / Qu, Xiao-Bo (author) / Wang, Shuai-An (author) / Guan, Hong (author)


    Publication date :

    2014


    Size :

    4 Seiten




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Investigation on Entry Capacities of Single-Lane Roundabouts

    Ren, L. / Qu, X.B. / Wang, S.A. et al. | British Library Conference Proceedings | 2014


    Investigation on Entry Capacities of Single-Lane Roundabouts

    Ren, Liang ;Qu, Xiao Bo ;Wang, Shuai An | Trans Tech Publications | 2014




    Modeling driving behavior at single-lane roundabouts

    Zhao, Min / Technische Universität Braunschweig | SLUB | 2019