Swiss motorways (autobahn, 120 km/h) and semi-motorways (autostrasse, 100 km/h): use acceleration/deceleration lanes, keep right when free, never overtake on the right, vignette required.
Joining and Leaving the Motorway
On the acceleration lane, match your speed to traffic on the main carriageway. Use the indicator and merge smoothly – the cars on the motorway have priority.
Use the deceleration lane to brake – never slow down on the main carriageway. Indicate before leaving.