FahrzeugBeleuchtungSicherheit
Vehicle basics for the Swiss theory exam
Theorie SwissMarch 14, 2026

Vehicle lighting – when to use which light?
Correct use of vehicle lighting is a frequent exam topic. Since 2014, Switzerland requires daytime lights—either dipped headlights or daytime running lights must be on for every journey.
- Dipped headlights – mandatory at night, in tunnels, in poor visibility
- Daytime running lights – sufficient during the day in good visibility
- Full beam – only outside built-up areas with no oncoming traffic
- Sidelights – only for marking a parked vehicle at night
- Fog lights – only in heavy fog, snowfall or rain
Tyres – tread depth and pressure
The minimum tread depth in Switzerland is 1.6 mm. At least 3 mm is recommended in summer, 4 mm in winter. Check tyre pressure regularly when tyres are cold.
Brakes – ABS and braking distance
ABS prevents wheel lock-up during emergency braking and maintains steering ability. The braking distance depends on speed, road surface and tyre condition. Rule of thumb: braking distance = (speed ÷ 10)².
Safety equipment
- Seat belt – mandatory for all occupants
- Child seat – children under 12 or under 150 cm need an appropriate restraint
- Warning triangle – must be carried and deployed in case of breakdown