1967day.year
Dagen H in Sweden: Traffic changes from driving on the left to driving on the right overnight.
Sweden switches from left-hand to right-hand traffic in a nationwide operation known as Dagen H.
In a landmark reform on September 3, 1967, Sweden converts its entire road system from left-hand to right-hand driving, an event called Dagen H. Authorities temporarily halt non-essential traffic to reposition road signs, repaint markings, and adjust intersections. A massive public information campaign and trial runs help drivers prepare for the change. At 5:00 AM, vehicles stop and restart on the opposite side, marking a remarkably smooth transition. The switch aligns Sweden with neighboring countries and improves cross-border travel. Despite initial confusion, the immediate post-change period sees a drop in traffic accidents due to heightened driver caution.
1967
Dagen H