Operation speeded by making either end of swing span fit either shore span; centralized control machine is used; operation of interlocking. (see also Ry. Signaling, vol. 23, no. 12, Dec. 1930, pp. 437-439, 4 figs.)
Toledo terminal installs simplified interlocking system for swing bridge
Ry. Age
Railway Age ; 89 , n 22
1930
2 pages
2 Figs.
Article (Journal)
English
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