Right-hand traffic refers to a system where vehicles drive on the right side of the road. This means that the driver's seat is typically on the left side of the vehicle, allowing for better visibility when overtaking other cars. Countries like the United States and Canada follow this system, making it easier for drivers to navigate and adhere to traffic rules. In contrast, left-hand traffic is used in countries like United Kingdom and Australia, where vehicles drive on the left side of the road. Understanding the difference between these systems is crucial for international travelers, as it affects how they operate vehicles in different regions.