What tests are required to upgrade from B2 to B1 license?

[ArcherMarie]

B2 to B1 license upgrade requires passing all three test subjects. Below is relevant information about upgrading from B2 to B1: 1. Training institution: Applicants should bring required materials to register at local motor vehicle driver training institutions, which will then handle the license upgrade procedures at their respective vehicle management office branches. 2. Driving certificate: After passing Subject 1, the vehicle management office will issue a 'Study Driving Certificate' (valid for three years) within one working day. Applicants must complete Subject 2 and Subject 3 tests within this validity period. Any passed subjects will be invalidated if not completed within the validity period.