Is it legal to post the license plate number at the entrance of the community?

Legal. Posting the license plate number at the entrance of the community belongs to the management system set by the owners themselves. Community regulations and local laws allow car owners to post the license plate number at the entrance of the community, so this behavior is legal, and car owners should abide by and implement the corresponding regulations before parking their cars. The purpose of sticking the license plate number at the entrance of the community is to maintain the traffic order and safety in the community and prevent foreign vehicles from abusing the parking space in the community or affecting the normal travel of the residents in the community.