Operation speeded by making either end of swing span fit either shore span; centralized control machine is used; operation of interlocking. (See also Ry, Age vol. 89, no. 22, Nov. 29, 1930 pp. 1183-1184, 2 figs.)
Toledo terminal installs simplified interlocking system for swing bridge
Ry. Signaling
Railway Signaling ; 23 , n 12
1930
3 pages
4 Figs.
Article (Journal)
English
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