Development on highway grade crossing protection; requisites for automatic gates; highway crossing sign; corrective measures to minimize or eliminate phantom indications of flashing light signals. (See also - n 1 p 195-200)
Committee VIII -- Highway grade crossing protection
Assn Am Railroads -- Proc (Signal Sec)
Association of American Railroads -- Meeting ; 1939 Specifications
1939
15 pages
Conference paper
English
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Committee VIII -- Highway grade crossing protection
Engineering Index Backfile | 1938
Committee VIII -- Highway grade crossing protection
Engineering Index Backfile | 1947
Committee VIII -- Highway grade crossing protection
Engineering Index Backfile | 1937
Committee VIII -- Highway grade crossing protection
Engineering Index Backfile | 1950
Committee VIII -- Highway grade crossing protection
Engineering Index Backfile | 1938