The side of the road people drive on varies across the world due to historical practices. In ancient times, traveling on the left was common. Most people were right-handed, and passing on the left allowed them to keep their sword arm ready against approaching strangers.
Driving conventions shifted in the 18th century. In France and America, wagon drivers began sitting on the left side of their wagons. This position allowed them to comfortably hold and swing their whips in their right hand without hitting passengers. This practice ensured better control of animals pulling the wagons and clearer visibility on the road, eventually leading to driving on the right.
Napoleon enforced right-side travel in much of continental Europe. In contrast, Britain and its colonies, including India, Australia, and New Zealand, retained left-side driving, resisting French influence.
In the early 20th century, mass-produced American automobiles popularized right-side driving in many regions. Today, around 65% of the world drives on the right, while roughly 35%, including the UK, Japan, India, and Australia, remain on the left. This difference is shaped by historical customs, practical needs, and colonial influences.
