Improved protection, with automatic control, including speed selections and automatic cutouts, is given to four-track main line crossing eight main streets in Chicago and Elmwood Park to reduce delays to city street traffic; flashing lights and gates; problems of control; selective speed control; interlocking relays.
Gates at eight street crossings on Milwaukee road
Ry Signaling Communications
Railway Engineering and Maintenance ; 45 , n 2
1952
3 pages
Article (Journal)
English
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