Overtaking should normally take place on the left-hand side – even on roads with multiple driving lanes in the same direction of travel.

Overtaking should normally take place on the left-hand side – also on carriageways with multiple lanes in the same direction of travel.

If traffic is so heavy that all lanes in the direction of travel are busy, and speed is determined by the vehicle in front, overtaking on the right-hand side is nevertheless permitted. Typically this happens when the 'queue' in the right-hand lane passes the 'queue' in the left-hand lane.

According to the situation described earlier, you need to wait for the car in front to change over to the right-hand lane before you can begin overtaking.