British traffic laws mandating that citizens drive their vehicles on the left side of the road are not just an arbitrary quirk, but a direct cultural hangover from the violent paranoia of the feudal medieval era.

A closer look

British traffic laws mandating that citizens drive their vehicles on the left side of the road are not just an arbitrary quirk, but a direct cultural hangover from the violent paranoia of the feudal medieval era. Back when travel meant riding a horse through dark, bandit-infested forests, knights and travelers naturally stayed to the left side of the dirt path so their right hand, which almost always held a heavy broadsword, would be perfectly positioned to hack at approaching strangers. When horse-drawn wagons and eventually motorized carriages replaced knights in shining armor, the deeply ingrained cultural habit of keeping your dominant slashing arm facing traffic simply stuck around. So every time a modern British commuter navigates a roundabout in their sensible hatchback, they are unconsciously participating in a thousand-year-old tradition based entirely on the assumption that they might need to aggressively joust their neighbor!