Revision of manual; comparative merits of various types of grade crossing protection; requisites for location, number and arrangement of automatic signals, automatic gates and auxiliary signs for rail highway grade crossing protection. (See also - discussion p 745-51)
Report of committee 8 -- Highways
Am Ry Eng Assn -- Proc
American Railway Engineering Association -- Proceedings ; 43 ; p 167-173
1942
7 pages
Article (Journal)
English
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Report of committee 9 -- Highways
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