For the violations of the highway code committed abroad, the legislation of the state where the violation is committed is applies; according to the Swiss federal traffic law, violations are divided into three type: mild, of moderate severity and serious, punished with different sanctions.
The possibility to pay by installments, and the limitation period of the fines and the relative start date, are governed by the provisions of Swiss law.
If you receive, in Italy, a claim for violation of traffic regulations for a fact committed in Switzerland, if there are no reasons to initiate proceedings, it is advisable to follow the instructions, procedures and terms reported in the documentation received for the purposes of payment; this because, despite the current agreement between the Swiss Confederation and the Italian Republic concerning the cooperation between police and customs authorities, does not provide for any close cooperation on traffic matter, failure to comply could lead to the imposition of even more burdensome penalties.