Revision of manual; drawings showing general requirements for installations of automatic gates; method of classifying grade crossings with respect to hazards; requisites for floodlighting of railroad-highway grade crossings; lamps on manual and automatic crossing gates; requisites for automatic crossing gates. (See also - discussion p 726-9)
Report of committee 9 -- Highways
Am Ry Eng Assn -- Bul
American Railway Engineering Association -- Bulletin ; 40 ; p 291-803
1939
513 pages
Aufsatz (Zeitschrift)
Englisch
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Report of committee 9 -- Highways
Engineering Index Backfile | 1952
Report of committee 9 -- Highways
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Report of committee IX -- Highways
Engineering Index Backfile | 1935
Report of committee 9 -- Highways
Engineering Index Backfile | 1939
Report of committee IX -- Highways
Engineering Index Backfile | 1935