Thailand on a Swiss Licence — Crossing to the Left, IDP Required

A car is the natural way to see Thailand beyond the resorts. For a Swiss driver the laws are manageable, but two of them differ from anything you handle on the well-drilled roads at home — and getting either wrong means an early fine.

You cross to the left

Switzerland drives on the right; Thailand drives on the left. That reversal is the biggest single adjustment, and the first day is where it catches people — roundabouts now turn clockwise, you pull out of fuel stations on the opposite side, and the instinct at a junction points the wrong way. Thailand’s roads also carry a constant flow of motorbikes that filter through gaps on both sides, leaving little room for a wrong-side wobble. Take your first hour on quiet roads and check your mirrors deliberately until the pattern resets.

The IDP is mandatory — and the right type matters

You must carry an International Driving Permit with your Swiss licence. The rental desk won’t release the car without it and a checkpoint stop without one means a fine. Thailand recognises the 1949 Geneva-convention permit, so when you apply in Switzerland make sure that’s what you’re issued — it can’t be sorted once you’ve landed. Keep the IDP, your licence and your passport together; our driving permit checker confirms the detail for your trip.

Speeds, alcohol and the practicalities

Limits run 50 in town, 90 rural and 120 on the motorway — the same motorway figure as home. The alcohol limit also matches Switzerland at 0.05 BAC, but with routine breath testing the safe figure is zero. A typical speeding fine is THB 500–1,000 (≈ €13–26); check yours on the speeding fine calculator.

Fuel is about $1.25/litre and the emergency number is 191. The full ruleset sits on our Thailand driving guide.