Signs at sharp turns; principal requisites of good road signs are simplicity, uniformity, and location; standard for location of sign is also necessity; route numbers on highways; checkerboard signs. Paper presented before Can. Good Roads Assn. (See also - discussion p 126E-126F)
Highway safety and direction signs
Can. Engr
Canadian Engineer ; 55 , n 15
1928
6 Figs.
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1947
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