Highlights ► A cause of periodic bursts in freeway bottleneck discharge flow is unveiled. ► The mechanism entails the interactions of four known effects in freeway traffic. ► Metering on-ramps in unconventional ways can favorably influence the mechanism. ► Conventional metering is found to retard the beneficial mechanism.

    Abstract A reason is unveiled for the time-varying pattern in discharge flow that is commonly observed at freeway bottlenecks. We hypothesize that four known effects in freeway traffic can interact upstream of a bottleneck in ways that trigger periodic bursts in its discharge flow. Repeated observations of a 3-km freeway stretch support the hypothesis. Controlled experiments show that the capacity-increasing mechanism can be favorably modulated by metering the site’s on-ramps in an unconventional manner. The unconventional strategy repeatedly produced higher average discharge flows and shorter on-ramp queues than did a more traditional metering policy.


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    Titel :

    A capacity-increasing mechanism in freeway traffic


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2012-06-17


    Format / Umfang :

    13 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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