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41–60 von 731 Ergebnissen
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    Government issues rules to cover Federal grade crossing work

    Engineering Index Backfile | 1935
    Schlagwörter: Railroad crossings

    Three-level rail and road crossing

    Cohen, A.B. | Engineering Index Backfile | 1933
    Schlagwörter: Railroad crossings

      Three-level rail and road crossing

      Cohen, A.B. | Engineering Index Backfile | 1933
      Schlagwörter: Railroad crossings

    New attitude is needed toward grade crossing separation

    Skillman, T.J. | Engineering Index Backfile | 1932
    Schlagwörter: Railroad crossings

    New Federal ordinance of May 7, 1929, for protection of grade crossings

    Hunziker, H. | Engineering Index Backfile | 1929
    Schlagwörter: Railroad crossings

    Wig-wag warning sign protects crossings

    Florence, S.R. | Engineering Index Backfile | 1929
    Schlagwörter: Railroad crossings

    Viewpoint of railway official on the important grade crossing problem

    Ford, R.H. | Engineering Index Backfile | 1929
    Schlagwörter: Railroad crossings

    Gates replaced by flashing signals

    Ratcliff, T.R. | Engineering Index Backfile | 1928
    Schlagwörter: Railroad crossings

      Gates replaced by flashing signals

      Ratcliff, T.R. | Engineering Index Backfile | 1928
      Schlagwörter: Railroad crossings

    Radio control added to crossing gates

    Mullen, C.J. | Engineering Index Backfile | 1963
    Schlagwörter: Railroad crossings

    Traffic lanes for crossing gate protection

    Engineering Index Backfile | 1955
    Schlagwörter: Railroad crossings

    Speed selection for MP gates

    Engineering Index Backfile | 1954
    Schlagwörter: Railroad crossings

    Gates at eight street crossings on Milwaukee road

    Engineering Index Backfile | 1952
    Schlagwörter: Railroad crossings

    Street and railroad crossing protection combined

    Engineering Index Backfile | 1951
    Schlagwörter: Railroad crossings

    Protection at all crossings in Knoxville

    Engineering Index Backfile | 1950
    Schlagwörter: Railroad crossings

    These three grade separations will cost $37,646,000

    Engineering Index Backfile | 1940
    Schlagwörter: Railroad crossings

    Committee VIII -- Highway grade crossing protection

    Engineering Index Backfile | 1939
    Schlagwörter: Railroad crossings

    Santa Fe modernizes crossing protection

    French, O.C. | Engineering Index Backfile | 1939
    Schlagwörter: Railroad crossings

    Remote control of crossing signals saves train stops

    Engineering Index Backfile | 1939
    Schlagwörter: Railroad crossings

    Die Sicherungsmassnahmen der Reichsbahn an schienengleichen Weguebergaengen

    Mueller H-U, D. | Engineering Index Backfile | 1938
    Schlagwörter: Railroad crossings

      Die Sicherungsmassnahmen der Reichsbahn an schienengleichen Weguebergaengen

      Mueller H-U, D. | Engineering Index Backfile | 1938
      Schlagwörter: Railroad crossings

    Automatic gates on erie

    Engineering Index Backfile | 1937
    Schlagwörter: Railroad crossings

    Grade crossing problem

    MacDonald, T.H. | Engineering Index Backfile | 1937
    Schlagwörter: Railroad crossings