Driving on the left side of the road means that vehicles travel on the left lane instead of the right. This practice is common in countries like United Kingdom, Australia, and Japan. When driving on the left, the driver's seat is usually on the right side of the car, allowing for better visibility of oncoming traffic. In places where people drive on the left, road signs and rules are designed to accommodate this system. For example, roundabouts often require vehicles to yield to traffic coming from the right. Understanding these differences is essential for safe driving in countries that follow this practice.