How long after obtaining an E license can you apply for a C1 license?

[MacElaina]

You can apply for a C1 license one year after obtaining an E license from a driving school, provided you have not accumulated 12 penalty points within that year. Eligibility requirements: If you already hold a motor vehicle driver's license and wish to apply for an additional vehicle class, you must not have accumulated 12 penalty points during the current scoring cycle and the most recent scoring cycle prior to application. Required documents: Proof of identity, original and photocopy of the applicant's motor vehicle driver's license, medical fitness certificate issued by a county-level or above medical institution, recent one-inch bareheaded white-background photo. Application process: Provide digital photos; fill out the 'Motor Vehicle Driver's License Application Form'; undergo a physical examination with proof of identity; submit the motor vehicle driver's license; complete registration procedures at a local motor vehicle driver training institution; take the scheduled exam; upon passing, the vehicle management office will issue a new driver's license.