An exam is required. If passed, the vehicle management office will issue the new-level driver's license within 7 working days. Below are the detailed conditions for upgrading from C1 to B2: Must have held a motor vehicle driver's license for at least one year; No record of accumulating 12 penalty points in the current scoring cycle and the most recent scoring cycle before application; No history of causing a fatal traffic accident while bearing equal or greater responsibility; No history of drunk driving; Driver's license has not been revoked or rescinded within the past ten years; Age must be between 20 and 60 years. C1 is a code for a type of permitted driving vehicle under the "Regulations on the Application and Use of Motor Vehicle Driver's Licenses" (Ministry of Public Security Order No. 123). C1 permits driving small and micro passenger vehicles, light and micro cargo vehicles, and light and micro special-purpose vehicles, and also allows driving vehicles permitted under C2, C3, and C4. B2 license permits driving heavy and medium-duty cargo vehicles or large, heavy, and medium-duty special-purpose vehicles. Heavy and medium-duty cargo vehicles are mainly trucks, such as the large trucks commonly seen on roads carrying construction waste, which fall under heavy trucks. Large, heavy, and medium-duty special-purpose vehicles refer to vehicles equipped with specialized devices or tools, such as sprinkler trucks, concrete mixer trucks, and fire trucks. Article 14 of the "Regulations on the Application and Use of Motor Vehicle Driver's Licenses" states that first-time applicants for a motor vehicle driver's license can apply for permits to drive city buses, large trucks, small cars, small automatic transmission cars, low-speed cargo vehicles, three-wheeled cars, small automatic transmission passenger vehicles for the disabled, ordinary three-wheeled motorcycles, ordinary two-wheeled motorcycles, light motorcycles, wheeled self-propelled machinery, trolleybuses, and trams. For those who already hold a motor vehicle driver's license and wish to apply for additional permitted vehicle types, they can apply for large passenger vehicles, tractor trucks, city buses, medium passenger vehicles, large trucks, small cars, small automatic transmission cars, low-speed cargo vehicles, three-wheeled cars, ordinary three-wheeled motorcycles, ordinary two-wheeled motorcycles, light motorcycles, wheeled self-propelled machinery, trolleybuses, and trams. Article 15 states that those who already hold a motor vehicle driver's license and wish to apply for additional permitted vehicle types must have no record of accumulating 12 penalty points in the current scoring cycle and the most recent scoring cycle before application. This applies to applications for medium passenger vehicles, tractor trucks, and large passenger vehicles. The B2 driver's license exam consists of four subjects: Subject 1 covers road traffic laws and regulations, including road traffic rules, traffic violations, traffic signals, and accident handling. Subject 2 involves operational tests for large passenger vehicles, city buses, and tractor trucks, including pole tests, side parking, hill starts, and single-plank bridge navigation. Subject 3 includes driving preparation, starting, straight-line driving, lane changes, and gear shifting operations for large passenger vehicles, city buses, tractor trucks, and medium passenger vehicles. Subject 4 covers safe and civilized driving requirements, safe driving knowledge for extreme weather and complex road conditions, and accident handling procedures.
