One-rail-length track circuits used in lieu of track contactors as actuating media; diagram of circuit; operating characteristics.
Experiment in highway-crossing signal control circuits in argentine
Ry Signaling
Railway Signaling ; 25 , n 8
1932
Aufsatz (Zeitschrift)
Englisch
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$541,000 highway crossing signal program in Indiana
Engineering Index Backfile | 1936
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Engineering Index Backfile | 1930
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