How long after obtaining a C1 driver's license can you apply for a B2 license?

[McSawyer]

You can apply for a B2 license upgrade if you have held a C1 driver's license for at least one year and have not accumulated 12 penalty points in the current scoring cycle or the most recent scoring cycle prior to application. The specific application process for a B2 driver's license is as follows: 1. If you reside in your registered residence or temporary residence, you can apply directly to the local or temporary residence authority; if you are a foreign national or active-duty military personnel, you can apply directly to your place of residence. 2. Fill out the relevant application forms. 3. Take the theoretical and practical exams. 4. Receive your license within 7 working days after passing the exams.