If the ticket issued by the traffic police is not signed, it will take effect if two traffic policemen are present or take pictures. Therefore, traffic police who violate parking tickets sometimes do not need to sign. Generally, the situation of posting tickets is illegal parking. After the police find illegal parking, if there is no driver or the driver doesn't drive away immediately, they can post a ticket.

Article 45 of the Procedures for Handling Road Traffic Safety Violations shall specify the basic information of the punished person, vehicle brand, vehicle type, illegal facts, punishment basis, punishment content, performance method, time limit, name of the punishment organ and the administrative reconsideration and administrative litigation rights enjoyed by the punished person according to law.