An analysis is developed to determine safe headway on PRT systems that use point-follower control. Periodic measurements of the position error relative to a nominal trajectory provide warning against the hazards of overspeed and unexpected stop. A computer program has been developed to model these hazards for arbitrary safety system design parameters. The results of computer runs indicate that the critical hazard on the main guideway is unexpected stop of a preceding car; on a station entry deceleration ramp, it is overspeed of a following car. The deceleration ramp headways are larger and are more sensitive to system parameters than are the main guideway headways. Typical headways are five seconds on a 30 mph main guideway and 16 seconds on a deceleration ramp for state-of-the-art system parameters. With advanced system parameters and emergency decelerations applicable to well supported, seated passengers, required headways are 2.5 seconds on the main guideway and 3.5 seconds on the deceleration ramp.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Analysis of Position Error Headway Protection


    Beteiligte:
    R. E. Whitten (Autor:in)

    Erscheinungsdatum :

    1975


    Format / Umfang :

    104 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Headway Groupings

    P. Athol | NTIS | 1965



    Useful headway models

    Cowan, Richard J. | Elsevier | 1974


    Headway control device

    NAKANISHI AKIRA / KATSURAGI TAKAYA | Europäisches Patentamt | 2023

    Freier Zugriff

    Making Headway ... Slowly

    Online Contents | 2013