What subjects need to be tested for upgrading from B2 to B1 license?

[OStephanie]

B2 to B1 license upgrade requires passing all three test subjects. Here are the relevant details: 1. Sequential examination: After the applicant successively passes Subject 1, Subject 2, and Subject 3, the vehicle management office will issue the motor vehicle driver's license within one working day. Applicants will receive education on traffic safety, civilized driving awareness, and traffic accident case warnings, participate in a pre-license oath ceremony, and then receive their motor vehicle driver's license. 2. Requirements: To apply for adding a medium-sized bus (B1) driving category, the applicant must have held another eligible driving license for more than one year and have no full-point penalty record in the most recent scoring cycle before application.