If you are planning on driving a vehicle that weights more than 3.5 tons on Swiss motorways you will need the Lump-sum heavy vehicle charge (LSVA / PSVA).
You can calculate and order the required Heavy Vehicle Charge (LSVA/PSVA) here.
Alternatively, you can pay the charge at border crossings, customs offices, and some service stations in Switzerland.
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What is the Swiss LSVA / PSVA?
Can I pay the PSVA in advance?
What vehicles need a Swiss motorway vignette?
How much does the Swiss PSVA cost?
Are there exemptions for the Swiss PSVA?