
Subject 3 includes the road driving skills test and the safe and civilized driving knowledge test, where the safe and civilized driving knowledge test is commonly referred to as subject 4. However, this is just a colloquial term used by students and driving schools. The official term is the subject 3 safe and civilized driving knowledge test, so it is not incorrect for the subject 4 reservation to display subject 3. Below is additional information: The subject 3 safe and civilized driving knowledge test covers topics such as safe and civilized driving operation requirements, safe driving knowledge under adverse weather and complex road conditions, emergency handling methods for situations like tire blowouts, and post-accident handling knowledge.

When I was getting my driver's license, I also encountered this issue. While trying to book the subject four test on the 12123 traffic management app, it inexplicably showed the subject three option, which really confused me. Later, I asked my instructor and found out that it's mainly because the system defaults to unlocking the subject four theory test only after you've passed the subject three road test. Sometimes, the app's data sync is delayed and doesn't update the records promptly, leading to such confusion. I've also tried logging out and back into the app or clearing the cache, which sometimes helps; if that doesn't work, it might be a software bug, or perhaps your subject three results were just submitted and haven't been fully reviewed yet. I recommend directly checking the exam history section in the app to confirm that your subject three status shows as 'Passed' before attempting to book subject four. Safety comes first when driving, and the exam sequence is designed to ensure we have a solid foundation before moving forward, preventing situations where you pass the theory but run into issues during the practical test. Don't rush it; just give the system some time to update or contact customer service if needed. After using this app frequently, I've gotten used to these minor glitches, but overall, it's still reliable.

I enjoy researching automotive topics in my spare time, and I find the design of the driving test system quite interesting. A common example is how the Traffic Management 12123 app shows Subject 3 when trying to schedule Subject 4. Essentially, the app's logic ties Subject 3 (practical driving test) and Subject 4 (theoretical test) together—you must pass Subject 3 before booking Subject 4. Sometimes, backend data updates with a delay, or unstable network connections when logging in can cause the app to display your Subject 3 status instead of the Subject 4 scheduling option. I've seen similar discussions on forums, with many users reporting that refreshing the app or logging in at a different time resolves the issue. From an automotive perspective, this exam sequence is designed to reinforce driver safety skills—mastering practical road skills before testing theoretical knowledge makes sense. Post-update, such issues have become rarer, though occasional bugs aren't surprising. Handling them patiently won't affect your exam progress.

When I tried to book Subject 4 on 12123, it kept switching to Subject 3 options, which was quite annoying. The reason is usually straightforward: the system prevents you from directly booking Subject 4 if it detects that you haven’t taken Subject 3 or your results haven’t been fully recorded. The app is designed this way to prevent skipping steps, and sometimes slow data syncing causes display issues. I’ve found that closing and reopening the app or waiting an hour or two before logging back in often fixes it. Don’t worry about making a mistake—it’s not your fault, just a minor technical glitch. Driving safety is what matters, so we have to tolerate these small app bugs and handle them calmly.


