Sweden : Högertrafikomläggningen

Dagen H (H day), today mostly called "Högertrafikomläggningen" ("The right-hand traffic diversion"), was the day, 3 September 1967, on which traffic in Sweden switched from driving on the left-hand side of the road to the right. The "H" stands for "Högertrafik", the Swedish word for "right traffic".

It was total chaos on the first morning after Sweden changed from driving on the left side to driving on the right, 1967.

1966