What are C1E and C1D driver's licenses?

[McNathan]

C1E driver's license allows driving C1-permitted vehicles plus ordinary two-wheeled motorcycles. The C1D driver's license, on the other hand, permits driving C1-permitted vehicles plus ordinary three-wheeled motorcycles, covering the driving permissions of E and F licenses, which can be considered the highest level among motorcycle licenses. Comparatively, the C1D license allows for a broader range of vehicle types. Classification of driver's licenses: Motor vehicle driver's licenses are divided into 16 categories: A1, A2, A3, B1, B2, C1, C2, C3, C4, C5, D, E, F, M, N, and P. C1 driver's license: The C1 driver's license is one of the codes for motor vehicle driver's licenses. The C1 license permits driving small and micro passenger vehicles, light and micro cargo vehicles; light, small, and micro special operation vehicles; and small passenger vehicles with a seating capacity of 9 or fewer people.