What does the license plate bx mean at the beginning?

The license plate bx refers to Shanghai bx, which is a private taxi license in Shanghai.

Note: License plate, commonly known as license plate, also refers to vehicle license plate. It's just a board hanging at the front and rear of the car. It is usually made of aluminum, iron, plastic or paper, with the registration number, registration area or other relevant information engraved on it.

The license plate is the registration of the number and information of each car. Its main function is to know the area of the vehicle through the license plate, and also to find the owner and registration information of the vehicle according to the license plate.

Special number plates for new energy vehicles: black lines on green background, gradual green new energy vehicle number plates, yellow-green large-scale new energy vehicle number plates (the area code is yellow and the number part is green).

Large car number plate: black line on yellow background. Medium-sized (inclusive) passenger cars, trucks and special operation vehicles; Semi-trailer tractor; Trams.

Trailer number plate: black line on yellow background. Full trailers and semi-trailers that are not fixed to the tractor.