Adaptive control algorithm to provide bus priority with a pre-signal

Haitao He, S. Ilgin Guler, Monica Menendez

    Research output: Contribution to journalArticle

    Abstract

    In urban areas, where road space is limited, it is important to provide efficient public and private transportation systems to maximize person throughput, for example from a signalized intersection. To this end, this research looks at providing bus priority using a dedicated bus lane which is terminated upstream of the intersection, and placing an additional signal at this location, called a pre-signal. Although pre-signals are already implemented in some countries (e.g. UK, Denmark, and Switzerland), an adaptive control algorithm which responds to varying traffic demands has not yet been proposed and analyzed in the literature. This research aims to fill that gap by developing an adaptive control algorithm for pre-signals tailored to real-time private and public transportation demands. The necessary infrastructure to operate an adaptive pre-signal is established, and guidelines for implementation are provided. The relevant parameters regarding the boundary conditions for the adaptive algorithm are first determined, and then quantified for a typical case using a micro-simulation model. It is demonstrated with case studies that, under all considered scenarios, implementing a pre-signal with the proposed adaptive control algorithm will result in the least average person delay at the intersection. The algorithm is expected to function well with a wide range of car demands, bus frequencies, and bus passenger occupancies. Moreover, the algorithm is robust to errors in these input values, so exact information is not required.

    Original languageEnglish (US)
    Pages (from-to)28-44
    Number of pages17
    JournalTransportation Research Part C: Emerging Technologies
    Volume64
    DOIs
    StatePublished - Mar 1 2016

    Fingerprint

    Adaptive algorithms
    human being
    public transportation
    transportation system
    simulation model
    Switzerland
    Denmark
    Railroad cars
    Throughput
    Adaptive control
    Bus
    Boundary conditions
    urban area
    road
    traffic
    infrastructure
    scenario
    Values
    time
    literature

    Keywords

    • Adaptive control
    • Bus lane
    • Pre-signal
    • Public transport
    • Transit priority

    ASJC Scopus subject areas

    • Automotive Engineering
    • Transportation
    • Computer Science Applications
    • Management Science and Operations Research

    Cite this

    Adaptive control algorithm to provide bus priority with a pre-signal. / He, Haitao; Guler, S. Ilgin; Menendez, Monica.

    In: Transportation Research Part C: Emerging Technologies, Vol. 64, 01.03.2016, p. 28-44.

    Research output: Contribution to journalArticle

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