What is the largest truck that a C1 driver's license can drive?

[McRichard]

C1 driver's license can drive light and small trucks with a total mass of 4,500kg or less (including 4,500kg), a vehicle length of 6 meters or less (including 6 meters), and an approved load capacity of 1,500kg or less (including 1,500kg). Vehicle types permitted by C1 license: The scope of C1 driver's license includes small and mini passenger cars, light and mini trucks; light, small, and mini special operation vehicles; small passenger cars with seating capacity of 9 or fewer people. Vehicles not allowed with C1 license: large buses, tractors, city buses, medium-sized buses, large trucks, ordinary three-wheeled motorcycles, ordinary two-wheeled motorcycles, light motorcycles, wheeled self-propelled machinery, trolleybuses, and trams. Also, C1 license holders cannot drive vehicles with more than 9 seats or trucks with a total length exceeding 6 meters. Age requirements for C1 license: The minimum age requirement for a C1 driver's license is 18 years old, with no upper age limit. However, applicants over 70 years old must pass tests on memory, judgment, and reaction abilities.