What licenses can be added to a Class C license?

[OAlexandra]

Holders of the original Class C driver's license can voluntarily choose to exchange it for a license with permitted vehicle types B1, C1, or C2. A C1 license can directly upgrade to a B2 license, B1 license, or A3 license. Here is relevant information: 1. License upgrade: Those who have just obtained one type of driver's license (such as a motorcycle license) can only take other types of driver's license tests (such as a car license) after one year. The upgrade test registration and examination process requires bringing both ID card and the previously obtained driver's license. Those who pass the test can upgrade their license. 2. C1 driver's license: The C1 driver's license is one type of motor vehicle license code. The permitted vehicle types for a C1 license include (all C2, C3, C4 vehicle types) small and micro passenger vehicles, light and micro cargo vehicles, and light, small, and micro special purpose vehicles. The test subjects include four items: traffic regulations and related knowledge, field driving, road driving, and safe and civilized driving common sense.