Högertrafikomläggningen ('the right-hand traffic reorganisation'), took place on the 3rd of September 1967, the day on which Sweden switched from driving on the left-hand side of the road to the right.

All non-essential traffic was banned from the roads from 01:00 to 06:00. Any vehicles on the roads during that time had to come to a complete stop at 04:50, then carefully change to the right-hand side of the road and stop again (to give others time to switch sides of the road and avoid a head-on collision) before being allowed to proceed at 05:00.

On the day of the change, only 157 minor accidents were reported, of which only 32 involved personal injuries, with only a low number being serious.On the Monday following the change, there were 125 reported traffic accidents, compared to a range of 130 to 198 for previous Mondays, none of them fatal.