How do traffic police handle vehicle body advertisements?

[HarperMarie]

If the altered color area or the area of temporary adhesive advertisements is less than one-third of the overall color, the vehicle will be urged to promptly go to the vehicle management office to complete the filing procedures. If the altered color area or the area of temporary adhesive advertisements exceeds one-third of the overall color, corresponding fines will be imposed, and the vehicle may be impounded for severe non-compliance.

[VonCameron]

I just went through the experience of putting ads on my car! A friend got stopped by the police for putting a small logo on their car. Usually, they give a warning or a fine, typically around 200 yuan. The reason is that according to traffic laws, ads must not block the rearview mirror or license plate, as it can affect traffic safety. After being checked, I looked it up and found out that you must first apply for approval at the local vehicle management office, and there are specific size and placement requirements, such as not exceeding 30% of the car's body. My advice is not to stick things on randomly, especially commercial ads, as they’re more likely to draw attention. Always check your car before driving—safety first! Getting fined also wastes your time.