Checking the information of residents' certificates is an important duty entrusted to the public security organs by law, and it is also a daily law enforcement activity of the public security organs. Traffic police is a kind of police in our country. In the process of law enforcement, traffic police also have the right to check their certificates. Article 15 of the Law of the People's Republic of China on Resident Identity Cards stipulates that when the people's police perform their duties according to law, they can check their resident identity cards upon showing their law enforcement certificates: first, it is necessary to find out the identity of suspected criminals; Second, when implementing on-site control according to law, it is necessary to find out the identity of relevant personnel; Third, in the event of an emergency that seriously endangers social order, it is necessary to find out the identity of the relevant personnel at the scene; Fourth, during major events, it is necessary to find out the identity of relevant personnel at railway stations, long-distance bus stations, ports, docks, airports or places specified by the municipal people's government with districts; Fifth, other circumstances that need to be identified according to law. In addition, the People's Police Law of the People's Republic of China also has relevant provisions on this. It can be seen that there are clear legal provisions for the people's police to check the resident card.

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Traffic police, referred to as traffic police for short, refers to the people's police in charge of traffic order management and traffic accident investigation in public security organs. It is a kind of police of the people's police. Its main responsibilities are traffic order management, traffic accident investigation, traffic crime investigation, vehicle and driver management, etc.