Today, primary motive power unit employed by United States railroads is diesel engine; until recently, trend was against further extension of electrified operation because of high initial costs; further, diesel locomotive can be operated throughout railway system in both electrified and nonelectrified zones; with advent of extensive electric power grids, rectifier locomotives, and ambitious plans for extensive rapid-transit systems, electrified operation has obtained new lease on life; signal system development has brought notable improvement in railroad safety and operations; most important in this category is centralized train control, by means of which single tower can control all switches and signals over more than 1000 km of mainline track; with automatic train stop equipment and speed control, train running through stop signal or exceeding speed limit can be electronically stopped or slowed, thereby eliminating possibility of human failure; two-way radio communications have done much to expedite freighttrain operations; many locomotives, cabooses, and signal towers are equipped to permit train conductors to talk to engineers or tower personnel, and to receive orders while enroute.


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    Titel :

    Railroad electrification -- Past, present, and future


    Weitere Titelangaben:

    IEEE -- Spectrum


    Beteiligte:

    Erschienen in:

    IEEE Spectrum ; 5 , n 8


    Erscheinungsdatum :

    1968


    Format / Umfang :

    11 pages


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Railroad electrification -- Past, present, and future

    Friedlander, G.D. | Engineering Index Backfile | 1968


    Railroad electrification -- Past, present, and future

    Friedlander, G.D. | Engineering Index Backfile | 1968


    Railroad electrification

    Parodi, H. | Engineering Index Backfile | 1931


    Railroad electrification

    Downs, L.A. | Engineering Index Backfile | 1928


    Railroad electrification

    Engineering Index Backfile | 1925