Automatic interlocker was recently placed in service at crossing of single-track lines of Chicago Great Western and Illinois Central, near Waverly, Iowa, which is controlled automatically by approaching trains; traffic and methods of operation; clearing; change-over was accomplished for $6500; salvage.
Automatic interlocker effects saving
Ry. Age
Railway Age ; 84 , n 7
1928
2 Figs.
Aufsatz (Zeitschrift)
Englisch
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