Control of automatic highway grade crossing signals and devices; requisites for automatic gates used for protection of highway traffic at railroad highway grade crossing; highway grade crossing signals.
Committee VIII -- Highway grade crossing protection
Assn Am Railroads -- Advance Reports (Signal Sec)
Association of American Railroads -- Advance Reports (Signal Section) ; 47 , n 1 ; p 214-234
1950
21 pages
Aufsatz (Zeitschrift)
Englisch
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Committee VIII -- Highway grade crossing protection
Engineering Index Backfile | 1948
Committee VIII -- Highway grade crossing protection
Engineering Index Backfile | 1938
Committee VIII -- Highway grade crossing protection
Engineering Index Backfile | 1946
Committee VIII -- Highway grade crossing protection
Engineering Index Backfile | 1939
Committee VIII -- Highway grade crossing protection
Engineering Index Backfile | 1937