What does the duty shift in Subject 2 mean?

[VanGenesis]

Taking a duty shift for the driver's license test means that, according to the regulations of some local driving schools, before taking Subject 3, you must first report to the local traffic police department and complete four hours of street volunteer service. More information about Subject 2 is as follows: Overview: Subject 2, also known as the small road test, is part of the motor vehicle driver's license assessment and is the abbreviation for the field driving skill test. The test items for cars C1 and C2 include five mandatory components: reversing into a parking space, parallel parking, stopping and starting on a slope, turning at a right angle, and driving on a curve. Others: If you fail the Subject 2 test for the first time, you can retake it once. If you do not participate in the retest or still fail the retest, the current test will be terminated, and the applicant must reschedule the test after ten days. Within the validity period of the driving skill test permit, the number of scheduled tests for Subject 2 and Subject 3 road driving skills tests must not exceed five times.