Twenty-four hour protection afforded at 13 crossings in Wabash, Ind., includes unique combination of automatic and manual control; payroll saving is about per year; control is combined automatic and manual; description of control circuits at Huntington Street; construction of units; power supply for operation. ($7800)
Flashing-light crossing signals save money for Wabash
Ry. Signaling
Railway Signaling ; 22 , n 1
1929
3 pages
10 Figs.
Aufsatz (Zeitschrift)
Englisch
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