Sweden's Great Traffic SwitcherooHow a nation changed driving sides overnight.

From the show

It really happened

On September 3, 1967, Sweden switched from left to right-hand traffic in a single day. This massive logistical event, known as Dagen H, was pushed through by the government despite 83% of the public voting against it. The strange reason for the change wasn't just to align with neighbors. It was because most Swedes already owned left-hand-drive cars, making overtaking on their own roads dangerously difficult. This is a story of when a government decided it knew best, with chaotic results.