September 3 - 1967 - Dagen H
In 1967, the entire nation of Sweden switched, in one day, from driving on the left hand side of the road to the right hand side of the road. This switch was done for a few very practical reasons, like that most cars in Sweden were already outfitted with steering wheels on the left hand side. To make sure everyone knew what was going on, the Swedish government launched a massive campaign with advertising, branded merchandise, and even a pop song called "Håll dig till höger, Svensson," or "Keep to the right, Svensson." Despite these efforts, the decision to switch was not an easy one, as it was widely opposed throughout the nation. Under the 23 year leadership of Prime Minister Tage Erlander, Sweden pursued policies that allowed Sweden to forge ahead and remain neutral in the Cold War. Dagen H was a practical matter that was deemed a necessity for Sweden's growth and safety. It also was pulled off without any serious problems. Traffic was limited in the early morning hours of a Sunday, then all traffic stopped at ten minutes until 5 AM. All cars then switched sides and moved ahead on the other side of the road at 5. From then on, Swedes have driven on the right hand side of the road.