To pay a fine at Traffic Control 12123, you need the following steps:

1. Open the Traffic Control 12123 APP, enter the gesture password, and enter the homepage;

2. Click "My Violation "Query;

3. Check the violations that need to be processed, click "Process Now", and click on the unprocessed violation;

4. Enter the "Payment" page and select the payment method "UnionPay Online Payment", confirm and submit the order;

5. After entering the relevant bank card information and verification code, confirm the payment;

6. The page information displays "You have paid successfully ”, it means that you have successfully handled vehicle traffic violations and completed payment through the mobile APP;