Typical sections; types of subway tracks; interlocking and permissive signals; cars; proposed concourse under and around City Hall. (See also Am. Soc. Mun. Improvements -- Proc vol. 35, Oct. 14-18, 1929 pp. 337-350, 10 figs (discussion) p 350, 10 figs)
The broad street subway and Philadelphia's projected high-speed transportation system
Engrs. Eng
Engineers and Engineering ; 47 , n 8
1930
5 pages
5 Figs.
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1928
SEPTA's Broad Street Subway Signal System Modernization Project
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Engineering Index Backfile | 1928
Engineering Index Backfile | 1929
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