Yes, an exam is required for upgrading from a C1 to a B2 license. The following are the conditions for upgrading from C1 to B2: Hold a C1 small car driver's license for more than 3 years, with no full-point records in the last three consecutive scoring cycles, aged between 20 and 50 years old, no record of causing a fatal traffic accident with equal or greater responsibility; no record of drunk driving; and no revocation or cancellation of the driver's license within the past ten years. C1 is one of the codes for the permitted driving models of a driver's license. According to the "Regulations on the Application and Use of Motor Vehicle Driver's Licenses" (Ministry of Public Security Order No. 123), C1 refers to a driver's license that permits driving small and micro passenger cars, light and micro cargo trucks, and light and micro special-purpose vehicles, and also allows driving the permitted models of C2, C3, and C4. The B2 license allows driving heavy and medium-duty cargo trucks or large, heavy, and medium-duty special-purpose vehicles. Heavy and medium-duty cargo trucks are mainly trucks, such as the large dump trucks commonly seen on the road, which belong to heavy-duty trucks. Large, heavy, and medium-duty special-purpose vehicles refer to vehicles equipped with special equipment or devices, such as water sprinklers, concrete mixers, fire trucks, etc. Article 14 of the "Regulations on the Application and Use of Motor Vehicle Driver's Licenses" states that for first-time applicants of a motor vehicle driver's license, the permitted driving models that can be applied for include city buses, large trucks, small cars, small automatic transmission cars, low-speed cargo trucks, three-wheeled cars, small automatic transmission passenger cars 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 apply to add permitted driving models, the models that can be added include large buses, tractors, city buses, medium-sized buses, large trucks, small cars, small automatic transmission cars, low-speed cargo trucks, three-wheeled cars, ordinary three-wheeled motorcycles, ordinary two-wheeled motorcycles, light motorcycles, wheeled self-propelled machinery, trolleybuses, and trams. Article 15 states that for those who already hold a motor vehicle driver's license and apply to add permitted driving models, there should be no full-point records in the current scoring cycle and the most recent scoring cycle before the application. For applications to add medium-sized buses, tractors, or large buses, the following additional conditions must be met: For applications to add medium-sized buses, the applicant must have held a city bus, large truck, small car, small automatic transmission car, low-speed cargo truck, or three-wheeled car license for more than three years, with no full-point records in the last three consecutive scoring cycles before the application. For applications to add tractors, the applicant must have held a medium-sized bus or large truck license for more than three years, or a large bus license for more than one year, with no full-point records in the last three consecutive scoring cycles before the application. For applications to add large buses, the applicant must have held a city bus, medium-sized bus, or large truck license for more than five years, or a tractor license for more than two years, with no full-point records in the last five consecutive scoring cycles before the application. Full-time driving vocational education students who have obtained a small car license while in school and have no full-point records in the current scoring cycle and the most recent scoring cycle before the application can apply to add large buses or tractors.
