The difference between C1 and C1D lies in the types of vehicles they permit driving, as detailed below: C1 driver's license: Permits driving small and micro passenger vehicles, light and micro cargo vehicles, and light, small, and micro special-purpose vehicles. C1D driver's license: Permits driving small and micro passenger vehicles, light and micro cargo vehicles, light, small, and micro special-purpose vehicles, as well as three-wheeled motorcycles and two-wheeled motorcycles. Conditions for upgrading from C1 to C1D: According to the "Regulations on the Application and Use of Motor Vehicle Driver's Licenses," the following conditions apply for upgrading a driver's license: If you already hold a motor vehicle driver's license and wish to add additional vehicle types, you must not have accumulated 12 penalty points in the current scoring cycle or the most recent scoring cycle before applying. A C1 license must be held for at least one year before upgrading to a D license. Then, you only need to study and obtain a D license as if you had no prior license. Be sure to inform the driving school that you already hold a C1 license when registering, and the driving school can merge the two licenses. A driver's license, officially known as a motor vehicle driver's license or simply "license," is a legal document required for driving motor vehicles. Driving a motor vehicle requires certain skills, and those lacking these skills may cause traffic accidents if they drive recklessly. Generally, individuals without a license are not allowed to drive on public roads. However, for those who have mastered safe driving techniques, the document allowing them to drive is the "driver's license." This means a driver's license is a "permit." Drivers must operate vehicles that match the types specified on their license. Driving a vehicle type not permitted by the license is considered unlicensed driving and may result in a fine ranging from 200 to 2000 RMB, 12 penalty points, and possibly up to 15 days of detention. According to the "Motor Vehicle Driver's License Business Work Standards" issued by the public security department, motor vehicle driver's licenses are classified into a hierarchical system, dividing them into 15 levels: A1, A2, A3, B1, B2, C1, C2, C3, C4, D, E, F, M, N, and P. The permitted vehicle types for each license level are as follows: A1 driver's license: Permits driving large passenger vehicles. A2 driver's license: Permits driving tractor trailers, heavy and medium-sized full trailers, and semi-trailer combinations. A3 driver's license: Permits driving urban buses with a capacity of 10 or more passengers. B1 driver's license: Permits driving heavy passenger vehicles. B2 driver's license: Permits driving heavy and medium-sized cargo vehicles, etc. C1 driver's license: Permits driving small and micro passenger vehicles, etc. C2 driver's license: Permits driving small and micro automatic transmission passenger vehicles, etc. C3 driver's license: Permits driving low-speed cargo vehicles (formerly four-wheel agricultural transport vehicles). C4 driver's license: Permits driving three-wheeled vehicles (formerly three-wheeled agricultural transport vehicles). D-type driver's license: Permits driving three-wheeled motorcycles with an engine displacement exceeding 50ml. E-type driver's license: Permits driving two-wheeled motorcycles with an engine displacement exceeding 50ml. F-type driver's license: Permits driving motorcycles with an engine displacement of 50ml or less. M-type driver's license: Permits driving wheeled self-propelled machinery vehicles. N-type driver's license: Permits driving trolleybuses. P-type driver's license: Permits driving tramcars.
