If you go back to the days of horse-drawn carts and lance-wielding nobility, French courtesy dictated that slower “traffic” on common roads stay to the right. This meant people on foot—peasants, in ...

Take a road trip across the U.S., and you'll notice something we barely question -- everyone drives on the right. It feels normal and almost automatic, but when you take that same trip to the U.K., ...

Most of the world keeps to the right. A smaller slice – often places with deep British roots – sticks to the left. That split didn’t happen by accident. It grew out of habit, safety, technology, and a ...