Why can't I bind my own motor vehicle on 12123?

[Catalina]

12123 may not be able to bind your vehicle because you just bought the car and the vehicle information has not been updated to the 12123 server yet, or the motor vehicle may have already been bound by more than four users. Here is some additional information: 1. Traffic Management 12123: On Traffic Management 12123, you can bind your driver's license and car. When there is a traffic violation, you can directly handle the violation and pay the fine on this platform. 2. The role of Traffic Management 12123: When learning to drive, you can also use Traffic Management 12123 to schedule exams, which is very convenient for candidates. After obtaining your driver's license, you can continue to use it. Traffic Management 12123 can also check the status of your vehicle and even provide one-click car moving services.