Italian traffic sign: road reserved for motor vehicle traffic. The sign indicates the beggining of a road other than motorway which is reserved for motor vehicle traffic, does not serve properties bordering on the road and where the same rules for the circulation on motorway applies.
Signal N. 10 of ministerial circular N. 1515 of 1981, used until 1992.
Circolare Ministero dei Lavori Pubblici n. 1515 del 28 settembre 1981 "Nuovi segnali stradali di indicazione"
Original:  Ministero dei Lavori Pubblici

Vectorization:  Earthshaker13