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What are the reasons for being unable to schedule Subject 4 on 12123?

4 Answers
DelSpencer
07/28/25 11:15am
The reasons for being unable to schedule Subject 4 on 12123: 1. Insufficient or invalid study hours. To schedule Subject 4, you must complete 10 study hours, with no more than 4 hours per day. Only after completing the required hours can you schedule the exam. Invalid study hours may occur due to overlapping training sessions, such as studying Subject 1 theory and Subject 4 theory simultaneously, or training for Subject 1 and Subject 2 at the same time. It is recommended not to study different subjects on the same day. Photo discrepancies can also lead to invalid study hours. If the photo taken during training differs significantly from the one submitted during registration due to posture, angle, or makeup, the system may deem it a mismatch. 2. Not meeting the exam cycle. Generally, after passing Subject 3, you must wait for one exam cycle before scheduling Subject 4. The exam cycle varies by region due to differences in administrative efficiency, typically around 10 days. The success of scheduling the exam also depends on local factors such as the number of applicants, exam capacity, and registration ranking. Therefore, there is no exact timeframe for when you can take Subject 4.
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ONolan
08/11/25 4:26pm
As a car enthusiast, I'm quite familiar with the 12123 platform. The main reasons for failing to schedule the subject 4 test lie in system or rule-related issues. For example, routine maintenance or upgrades of the 12123 servers may lead to limited functionality, especially during weekends or peak exam periods with high traffic. Check your phone settings to ensure the app is updated to the latest version, avoiding compatibility issues with outdated versions. Another common problem is unstable network connections—try switching between Wi-Fi and mobile data or restarting your device. If it's a platform-side issue, the authorities will post notifications or updates on social media, so follow the 12123 official account for updates. I've also encountered user input errors, such as incorrect ID numbers or password issues, so double-check your personal information. Preventive measures include avoiding the crowded early morning hours, contacting the customer service hotline to describe the specific issue—they usually respond quickly. Don't worry, it's not a big problem; just handle it patiently.
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McJonathan
09/28/25 5:24am
When I first started learning to drive, I also got stuck trying to book Subject 4 on the 12123 platform. The main reason is often eligibility issues—like if your Subject 3 results haven’t fully uploaded, the system won’t let you schedule. I had to wait half a day or even a full day before trying again, or push my driving school to upload the documents. Fully booked slots are also common, especially during peak times like weekends when it’s crowded. I eventually succeeded by switching to weekday afternoons. Make sure your personal info is accurate, with your phone number and ID properly linked, or the system will throw errors. Also, accumulated app cache can slow things down—clearing your phone’s memory or reinstalling the app usually fixes it. Don’t stress; persistent attempts usually resolve the issue. I recommend noting down each failure time to help your driving school analyze the problem.
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McCorey
11/11/25 7:18am
Based on long-term observations, the inability to book Subject 4 is often due to system maintenance or quota limitations. The 12123 platform regularly updates its backend, during which functions are temporarily suspended. It is recommended to check the official website announcements for maintenance periods. When quotas are tight, such as during peak periods like the end of the month when slots are quickly filled, you may need to wait for multiple rounds of openings or choose less popular cities to avoid competition. Student qualifications, such as exam status, need to be verified to ensure all Subject 3 tests are passed. Platform rules are sometimes fine-tuned, affecting booking logic. I recommend trying during calmer periods, such as weekday mornings, and refreshing the page frequently while staying patient. If repeated attempts fail, report the issue through the APP feedback channel or contact the local traffic management office to inquire about policy changes. In conclusion, this is not a major obstacle, and normal handling will allow you to resume smoothly.
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