
In principle, Subject 4 cannot be taken at a different test center; you must take the exam at the location where you registered. Below are the precautions for the Subject 4 exam: 1. Verify information: After sitting down, first verify the examinee information. If it does not match your details, check if it is your assigned seat. If not, find your correct seat. If the seat is correct but the information is wrong, report it immediately. 2. Follow test center rules: During the Subject 4 exam, adhere to test center discipline. If you make loud noises during the waiting period, you will be expelled and disqualified from taking the exam that day. 3. Follow instructions: Obey the staff's arrangements. If you have questions, raise your hand and ask the examiner—don't be afraid. 4. Adjust the camera position: Adjust the camera to focus on the upper third of your face and chest. If your face is not within the monitoring range, your score will be invalidated.

I encountered a similar issue when I was getting my driver's license. At that time, I needed to change cities for the test due to a sudden business trip. I specifically consulted the local DMV, and the staff told me that Subject 4 could be taken at a different test center within the same city. The most common method is to use the Traffic Management 12123 app, where you can find the 'Change Test Center' option on the exam reservation page. However, there are limits to the number of changes—only twice per exam season—and the change must be made at least three days before the test. It's advisable to check if the new test center has available slots in advance to avoid a wasted trip. It's also best to call the DMV beforehand to confirm local policies, as some smaller cities may require in-person procedures for changes.

Last time I took students for the exam, we encountered a situation where the test center was changed. Actually, it's quite simple. Most regions now support online changes. Open the traffic management APP, find the exam reservation module, cancel the original reservation first, and then reselect the test center. However, there are a few points to note: You cannot change the test center within 24 hours after the first reservation, the new test center must be within the same prefecture-level city, and most importantly, ensure that there are available slots at the new session. I've encountered situations where students changed the test center last minute only to find it fully booked, ultimately delaying the exam time. It's recommended to make the change at least three days in advance for safety, and also notify the driving school to update the record information.

You can easily change the test center using the Traffic Management 12123 APP. The operation is simple: after logging in, go to the exam reservation page, find the scheduled subject 4 record, click cancel, and then select another test center when rebooking. However, note that the available operation time is from 9 AM to 5 PM daily, and there are limited cancellation attempts. Most importantly, the new test center must have available slots; otherwise, the reservation cannot be successful. After the change, the system will send an SMS reminder, so remember to take a screenshot to save the new test center information.


