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More from TodayIFoundOut:
The Truth About Big Ben and the Famous Clock Tower
https://youtu.be/Ci4lhArVpzw
In this video:
Not a spur of the moment decision, the Högertrafikomläggningen (“The right hand traffic diversion”) had been planned for years prior to implementation, in recognition of the inherent problems that arose by the fact that among the nations of Continental Europe, Sweden was the only country where people still drove on the left. (If you’re curious why, see: Why Some Countries Drive on the Right and Some Countries Drive on the Left.) In addition, the architects of the plan tapped into the widespread perception that having the steering wheel on the left while also driving there caused more head-on collisions.
Want the text version?: http://www.todayifoundout.com/index.php/2016/01/time-sweden-changed-traffic-direction-single-day-dagen-h/
Sources:
https://en.wikipedia.org/wiki/Dagen_H
https://www.washingtonpost.com/blogs/blogpost/post/dagen-h-the-day-sweden-switched-sides-of-the-road-photo/2012/02/17/gIQAOwFVKR_blog.html
http://translate.google.co.uk/translate?u=http://hem.bredband.net/b132258/hogertrafik/Dagen_H.htm&sl=sv&tl=en&hl=en&ie=UTF-8
https://news.google.com/newspapers?id=-H5AAAAAIBAJ&sjid=vaMMAAAAIBAJ&pg=4015%2C455407
https://news.google.com/newspapers?id=lp8tAAAAIBAJ&sjid=PKAFAAAAIBAJ&pg=4803%2C566394
