Principles of design of series of highway signs; reflector buttons; model testing under field conditions; regulating traffic by pavement markings; use of single and double lines; painting of pavements. (See also -- (discussion) p 7 and 10, n 18 Oct 31 1939 p 5-8)
Standards for signs, signals and pavement markings
Can Engr
Canadian Engineer ; 77 , n 19
1939
2 pages
Article (Journal)
English
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