The use of license plate letters is in chronological order, starting with Tianjin A, and then using a new letter after using up the serial number of one letter. At present, there are 15 kinds of license plate letters in use, followed by A-R.
License plate classification
1, the most common small car: white lines on a blue background.
2. Coach's license plate: "Learning" is written in black on the yellow background. Black box line. The coach uses the car.
3. Trailer number plate: black line on yellow background. Full trailers and semi-trailers that are not fixed to the tractor.
4. Entry-exit number plates of Hong Kong and Macao: white characters on black background, white characters of "Hong Kong" and "Macao", and white lines.
5. Large car number plate: black line on yellow background. Medium-sized (inclusive) passenger cars, trucks and special operation vehicles.