Revision of manual; design and specifications for highway-railway grade crossings; number and location of automatic signals, automatic gates and auxiliary signs for grade crossing protection; method of classifying crossings with respect to public safety.
Report of committee 9 -- Highways
Am Ry Eng Assn -- Bul
American Railway Engineering Association -- Bulletin ; 50 , n 476
1948
20 pages
Report
Englisch
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Report of committee 9 -- Highways
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