Twenty-five crossings in Elgin, Ill., protected by 41 signals, with annual saving of $9213; special manual control solves difficult problem.
C. and N.W. Replaces highway crossing gates with wig-wags
Ry. Signaling
Railway Signaling ; 19 , n 12
1926
3 pages
4 Figs.
Article (Journal)
English
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