How many chances are there to take the B2 Subject 4 exam?

[DeGia]

B2 Subject 4 has no limit on the number of exam appointments, meaning there is no restriction on the number of retakes. Relevant information about the driver's license exam is as follows: Immediate retake opportunity: Each subject allows one exam attempt and one retake after appointment; if the retake is not attended or still fails, the exam must be rescheduled. Appointment limits: Within the validity period of the driving skill test permit, Subject 2 and Subject 3 can each be scheduled no more than five times (i.e., ten exam attempts in total). If the fifth scheduled exam is still failed, the results of other passed subjects become invalid, and the candidate must restart from Subject 1. Time frame: Subject 1 and Subject 4 have no limit on the number of appointments. However, the driving skill test permit is valid for three years, and applicants must complete all subject exams within this period. If not completed within the validity period, the results of any passed subjects become invalid.