Italian road sign: advanced direction sign. The background of the sign is white since it is mounted on urban road. Picture N. 79 of ministerial circular N. 400 of 1979.
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2022-09-02
Circolare Ministero Lavori Pubblici n. 400 del 9/2/1979 "Segnaletica urbana di indicazione" - Capitolo 21 "Segnali di preavviso di intersezione"