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Swiss Driving Theory · RTA / TRO
Swiss trailer rules: Cat. B up to 750 kg trailer (or up to 3500 kg combination), Cat. BE for heavier trailers. Max. 100 km/h on motorways if approved, secure load.
Cat. B (car) allows trailers up to 750 kg total weight, or heavier if total combination ≤ 3500 kg
Cat. BE required for heavier trailers (up to 3500 kg trailer)
Trailer must not exceed the towing car’s permitted trailer weight (registration document)
In town: 50 km/h (general limit applies)
Country roads: 80 km/h
Motorway / semi-motorway: max. 100 km/h (trailer up to 3.5 t, approved for it)
Over 3.5 t or not approved for 100 km/h: max. 80 km/h – check signs and trailer plate
Loading: heavy load over the axle, lighter load above. Secure against shifting. Heavy front load increases drawbar load – check max. drawbar load on registration.
Driving: longer braking distance, wider turns, careful in side wind. Trailer with brakes is much safer than unbraked.
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