Left-hand traffic means that vehicles drive on the left side of the road, and the driver sits on the right side of the vehicle. If you're visiting a country with left-hand traffic, practice turning, looking both ways, and roundabout use. Parking, lane changing, and overtaking are also reversed from right-hand traffic systems. Right-hand traffic — where people drive on the right side and sit on the left side of the vehicle (used in the U.S., most of Europe, etc...)
Reminder to drive on the left in Thailand. (Nong Khai, Thailand) © Wikimedia.org/Mattes, CC0
Traffic rules
