What does the C1D driver's license represent?

[VonMaverick]

C1 and D driver's licenses refer to a combined driver's license that permits driving both C1 and D vehicle types. The C1 license allows driving small cars, while the D license permits driving ordinary three-wheeled motorcycles. C1: Small cars, small automatic transmission cars, low-speed trucks, and three-wheeled cars. Small and micro passenger cars, as well as light and micro trucks; light, small, and micro special-purpose vehicles; small passenger cars with a seating capacity of 9 or fewer people. D: Three-wheeled motorcycles with an engine displacement greater than 50ml or a maximum design speed exceeding 50km/h, ordinary two-wheeled motorcycles, and mopeds. Application age: The minimum age requirement for a C1 driver's license is 18 years old, with no upper age limit. The application age for a D driver's license is between 18 and 60 years old, and a medical examination certificate is required for application.