Swedish motorways (motorvägar) have specific rules that differ from other roads. Correct lane use keeps traffic flowing and dramatically reduces rear-end collision risk.
Keep Right
On Swedish motorways, you must drive in the rightmost lane unless overtaking. This is a legal requirement, not just good practice. Driving unnecessarily in the left lane (lane hogging) is a traffic offence.
Overtaking on Motorways
Overtake only on the left. Undertaking (passing on the right) is illegal except when traffic is moving in queues and the right lane is moving faster due to natural flow. Signal before moving out, complete the overtake, signal and return to the right lane promptly.
Joining and Leaving
Accelerate on the slip road to match motorway speed before merging. Give way to motorway traffic — they do not have to make room for you. When leaving, signal early, move to the right lane, and decelerate on the exit slip road, not on the main carriageway.
Minimum Speed
On motorways you must be able to maintain at least 40 km/h in normal conditions. Vehicles that cannot reach this speed are not permitted on motorways.
Exam tip: Lane-hogging in the left lane is a common exam scenario. The rule is clear: right lane unless overtaking.