Is it illegal to post advertisements on your private car?

Does posting advertisements on private car bodies comply with relevant regulations? Car owners have said that their cars can be posted casually. Is it still recognized by others? Car body advertising is acceptable because it does not affect the use of vehicles or traffic safety. "It costs a lot of money to advertise on TV and newspapers. This kind of car body advertisement does not need much capital investment, and the publicity effect is good. Wherever this car goes, it is easy to be seen by the public. Car body advertisers have strong mobility, strong pertinence, large audience, wide communication range, low cost and good communication effect, so they are recognized by some citizens and widely praised by advertising companies. At present, the private cars advertising on the car body are mainly minivans, and the advertising forms are mainly to post contact numbers or product names on the car body, and some even design and spray the whole car body. Regardless of whether the content and form are simple or not, private car body advertisements should obey the provisions of the advertising law and the management regulations of the vehicle management department. At present, there are no clear laws and regulations to regulate private car body advertising, and relevant laws and regulations need to be introduced urgently. At the same time, remind relevant car owners not to blindly post advertisements on private cars to avoid trouble. Take Nanjing as an example. According to the Regulations on the Registration of Outdoor Advertisements, any private car or bus must go through the registration formalities in the industrial and commercial department and obtain a license for the registration of outdoor advertisements. To apply for a permit, you need a business license, a vehicle driving license and a body advertisement sample. Advertisements on the body of a private car are only allowed to be posted on both sides of the body except the window glass. Advertisements are not allowed to be posted on the front and rear windshield, front hood and trunk lid of the car, and the main color of the car body cannot be changed. Set aside a certain area of body color on both sides of the body (excluding glass), and the advertising area shall not exceed 2/3 of the body.