Why do some cars have blue license plates and some black?

Large civil vehicles: black on yellow;

Small civilian cars: white on blue background;

Armed police special car: red "wj" on white background, black characters;

Other foreign cars: white on black;

Foreign cars of embassies and consulates: white characters on a black background and hollow "envoy" signs;

Test license plate: red on a white background, with the word "test" sign in front of the number;

Temporary license: red on a white background, with the word "temporary" in front of the number;

Car replacement license plate: black on white background.

In addition, the civil automobile license plate has the name of the province, municipality directly under the Central Government and the autonomous region and the code of the license issuing and supervision authority, and the number is an English capital letter.

The car number at the back is generally 5 digits, that is, from 00001 99999.

When the number exceeds 100,000, it is replaced by English letters such as a, b, and c, that is, a represents 100,000, b represents 110,000, c represents 120,000, and the last letter and z represent 330,000.

The i and o in the English alphabet are avoided to avoid confusion with the 1 and 0 in the numbers.

The small number on the foreign automobile license plate of the embassy or consulate is the code of the country where diplomatic relations are established, and has nothing to do with the regulatory number of the region where it is located.

Black plate cars refer to foreign-funded enterprises.

Some license plates are green and are differentiated according to the purpose of the vehicle, size, etc. There are two common types of green license plates: special license plates for new energy vehicles and civil aviation license plates.

White license plate on blue background. The white license plate on a blue background is our most common license plate, which is mainly used for ordinary small cars. Of course, it also includes administrative vehicles other than the special number section of ** organs and police cars of political and legal departments.

Black cards on a yellow background. Maybe you see more on the car, as long as it is more than 6 meters, such a car must be hung with a yellow card. For example, all kinds of trucks, engineering vehicles, buses, and even some vans also need to be yellow cards.

In addition, the license plates for agricultural vehicles and training vehicles, as well as the unfinalized test vehicles of new products are all hung with this kind of license plate.

License plate with white letters on a black background. Generally speaking, foreign-related vehicle license plates are black, with white letters on a black background. The consulate's car starts with the word "collar", and the embassy's car starts with the word "envoy".

Green letter license plate. This type of license plate is not very common now, but in some places it is gradually increasing. The green license plate is only for electric vehicles, but at present, only Shanghai, Nanjing, Wuxi, Jinan, and Shenzhen have begun to implement it in China, which is why the electric vehicles in Guangzhou are still blue license plates.

License plates are divided into light blue and dark blue, because there was no unified color tone in the early countries, so many license plate manufacturers did not have a unified standard when manufacturing license plates. There are some differences in shades of blue for licenses that are not produced in the same place or in the same batch.

In 2010, the state stipulated the uniform use of light blue as the color of the license plate, so the license plates applied for after 2010 are light blue, and most of the license plates applied for before 2010 are dark blue, so there are two kinds of license plates seen now: dark blue and light blue.

The reason why the license plate has light blue and dark blue is because the earliest country did not have a unified shade of blue, resulting in different shades of license plate color in many places in China, such as the old license plate in Beijing is dark blue. In 2010, the national chain core unified the blue color as a light blue color, so the new license plates after 2010 are light blue, and many old license plates before 2010 are dark blue.

Black on yellow and black wireframe. Trucks with a total mass of 4500kg (inclusive) or more than 20 passengers (except the driver) and passenger cars with a body length of 6 meters (inclusive) or more are installed with this license plate x0d x0a (2) small car license plate: white on a blue background and white wire frame.

Trucks with a total mass of less than 4500kg (exclusive) and cars with a total capacity of less than 20 people (exclusive) and a body length of less than 6 meters (exclusive) are installed with this license plate. X0D X0A (3) trailer number plate: black on yellow background, black wire frame.

Full trailers and semi-trailers that are not fixed with the tractor are installed with this number plate. X0D X0A (4) motorcycle number plate: black on yellow background, black wire frame; Two-wheeled and three-wheeled motorcycles and battery cars are equipped with this license plate.

The color of the blue plate is dark blue, and the blue plate is an ordinary small car (including the special number section of the ** agency, the police car of the political and legal department, and the administrative car of the other place).

The background color of the license plate is blue, yellow, white, and black.

Trembling blue is the license plate of a trolley (including a small tonnage truck).

Yellow is the license plate for large vehicles or agricultural vehicles, the license plate of the training vehicle, and the test vehicle for the new product. Motorcycles are also yellow carded.

White is the license plate of special vehicles (such as military vehicles, police car license plates and racing car license plates), and black is the license plate of foreign companies and foreign-owned enterprises brought by foreign vehicles.

Large civil vehicles: black on yellow;

Small civilian cars: white on blue background;

Armed police special car: red "wj" on white background, black characters;

Other foreign cars: white on black;

Foreign cars of the Ant Dong Chong Embassy and Consulate: white characters on a black background and a hollow "envoy" sign;

Test license plate: red on a white background, with the word "test" sign in front of the number;

Temporary license: red on a white background, with the word "temporary" in front of the number;

Car replacement license plate: black on white background.

In addition, the civil automobile license plate has the name of the province, municipality directly under the central government, and the autonomous region, the code of the license and the supervision authority, and the number is an English capital letter.