Increase in number of automotive vehicles and greater distances traveled by privately owned cars has multiplied traffic dangers; since 1924 American Association of Highway Officials has made intensive study of highway signals, signs and markings; Pan-American Federation of Highway Education has published Spanish translation of manual on signs, signals and markings.
Choice of highway signals and signs
Eleccion de senales y advertencias para las carreteras
Ingenieria Internacional ; 16 , n 6
1928
4 pages
12 Figs.
Article (Journal)
English
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International standardization of highway traffic signs, signals and markings
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