Italian road sign: motorway begin. The sign is placed on the link between motorway and ordinary road. The left part of the sign shows the main traffic restriction for traffic on motorwyas (motorized tricycles with an engine displacement less than 500 cc, sidecars with an engine displacement less than 250 cc, motorcycles with an engine displacement less than 150 cc, ...).
Picture 24 of ministerial circular n. 9540 of 1969, later recalled as picture 74 of ministerial circular n. 2730 of 1971. Used unitl 1992.
Circolare Ministero dei Lavori Pubblici n. 9540 del 20 dicembre 1969 "Segnaletica autostradale"
Original:  Ministero dei Lavori Pubblici

Vectorization:  Earthshaker13