1. You can check the license plate number through the invoice. Because of the regular taxi invoice, there is a column on the invoice that says the taxi license plate number. Just check it directly.
2. If it's quota invoice or an invoice without a license plate number, you can call the taxi company to explain yourself. Just call the driver for advice.
If you don't get the invoice, you can remember the first few numbers of the taxi or the time and place to get off and check with the local passenger management office.
4. If you don't know anything, you can call the police for help directly, explain the time and place of getting on and off, and inquire through monitoring.
The above are several ways to query the taxi license plate number, hoping to help you.