"1종" refers to a category of driver's license in South Korea, specifically for operating large vehicles such as buses and trucks. This license allows the holder to drive vehicles with a gross weight exceeding 3.5 tons, making it essential for professional drivers in the transportation industry. To obtain a "1종" license, applicants must pass both a written test and a practical driving test. The process ensures that drivers are knowledgeable about road safety and vehicle operation, contributing to safer roads and efficient transportation services in the country.