Italian road sign: identifier of maxium speed of vehicles. The sign is placed on the rear of a vehicles and shows the maximum speed allowed for that vehicles on rural road.The speed limit of 80 had to be respeced by motor vehicles with an engine displacement in range 600 - 900 cc and by motorcycle (and motorcycle-like vehicles) with an engine displacement in range 100 - 149 cc. Introduced in 1977, used unitl 1988.
Decreto Ministeriale del 29 ottobre 1977 Limiti massimi generali di velocità ai sensi della legge 8 agosto 1977 n. 631, per tipi di veicoli con ridotte prestazioni (G. U. n. 301 del 4 novembre 1977)
Original:  Ministero dei Lavori Pubblici

Vectorization:  Earthshaker13