What are the requirements for upgrading to a B2 driver's license?

[DelMalia]

Hold a driver's license for more than one year, be between 20 and 50 years old, and have no major violation records. The following is a related introduction about B2: 1. Vehicles that can be driven: The vehicle types that a B2 driver's license can drive are heavy-duty, medium-duty cargo trucks or large, heavy-duty, and medium-duty special operation vehicles. Heavy-duty and medium-duty cargo trucks are mostly trucks, such as the large dump trucks commonly seen on the road, which belong to heavy-duty trucks. 2. Difference from A2: The difference between driver's license A2 and B2 is that A2 is a tractor-trailer driver's license, which refers to vehicles composed of a tractor head and a trailer; while B2 is a single-unit cargo truck.