Recent installation of automatic tubular aluminum-alloy highway gates, operated electrically and controlled by track circuits; 1/2- hp. Westinghouse motor operates gate arms through silent chain and worm-gear drive; safety features. (see also Ry. Age, vol. 87, no. 7, Aug. 17, 1929, pp. 425-426, 3 figs)
North Shore line installs automatic highway crossing gates
Ry. Signaling
Railway Signaling ; 22 , n 8
1929
2 pages
3 Figs.
Article (Journal)
English
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North Shore line installs automatic highway crossing gates
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