Didn't you send a message when you took the exam on time?

There are text messages. There is a text message to inform you of the exam. You can arrive within the test time on the day of the appointment. There will be a SMS reminder the day before. If you don't receive the text message, you have entered the wrong mobile phone number. Subject 4, also known as subject 4 theory test and driver theory test, is a part of motor vehicle driver's license test. The examination contents include: requirements for safe and civilized driving operation, knowledge of safe driving in bad weather and complex road conditions, and emergency handling ability in case of flat tire.