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Bhutan, is the world’s only country that is often called free of traffic signals. Notably, the population of Bhutan is around 8 lakhs only and the country has around 1.3 lakhs cars.  Bhutan, is the world’s only country that is often called free of traffic signals. Notably, the population of Bhutan is around 8 lakhs only and the country has around 1.3 lakhs cars.