Italian traffic sign: advanced sign for a road where motor vehicles must use winter tires or carry snow chains. Motorcycles (including two-wheeled mopeds) are not required to use winter tires or carry snow chains, but are not permitted to ride in icy or snowy conditions. The last plate of the sign indicates the road section where it is necessary to use winter tires (or snow chains). Sign intended for use on motorways. Introduced by directive n. 1580 of 2013.
Direttiva Ministero delle Infrastrutture e dei Trasporti n. 1580 del 16/01/2013 Direttiva sulla circolazione stradale in periodo invernale e in caso di emergenza neve
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