An engineering baseline definition of an urban fast transit link transportation system consisting of vehicles riding on steel wheels in underground evacuated steel tubes, using gravity and differential air pressure for propulsion and braking. Stations are on-line. No switching is required. 25K and 50K/hour capacities are discussed. (UMTA abstract)


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    Baseline System Definition: Urban Gravity-Vacuum-Transit

    L. K. Edwards / R. E. Skov | NTIS | 1968


    Urban gravity-vacuum transit system

    Edwards, L.K. | Engineering Index Backfile | 1969



    Fast Transit Link Systems. Technical Reviews of Four Baseline Definitions

    R. W. Blevins / J. S. O'Connor / S. J. Brown et al. | NTIS | 1970


    mark matching system

    KONG CHOON KI | Europäisches Patentamt | 2021

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