Explains why safety, efficiency and security were the main reasons behind the very elaborate control communications network used in Washington metro. It enables a compact but highly skilled team to provide manual back-up when routine automated operations are disrupted.
Good communications to keep Washington on the move
Nachrichtensystem in Washingtons U-Bahn
Railway Gazette International ; 132 , 3 ; 100-103
1976
4 Seiten
Article (Journal)
English
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