Necessary modifications of d.c. track circuits in detail or in principle, to insure reliable protection of motor buses and cars; preservative treatment of capping and grooved trunking.
Committee report on direct current automatic block signaling
Am. Ry. Assn. (Signal Section) -- Proc
1926
6 pages
Aufsatz (Zeitschrift)
Englisch
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Committee IV. -- Direct current automatic block signaling
Engineering Index Backfile | 1922
Committee IV -- Direct current automatic block signaling
Engineering Index Backfile | 1926
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