How are the police signals regulated?

The police number of a police officer is equivalent to the policeman's "ID card". Only with the "ID card" can law enforcement be carried out. Typically, a siren will follow a police officer until retirement. For work needs and ease of use, multiple number plates can be issued when the police signal is issued. There are no letters on the police signal, only numbers.

1. Judicial police: (7 chiefs in the prison and labor camp systems, 6 chiefs in the procuratorial and court systems, the first two are divided into provinces)

Example: 01 Supreme People's Procuratorate Judicial Police Bureau, Judicial Police Department of the Supreme People's Court, Prison Labor Reeducation through Labor People's Police Management Agency of the Ministry of Justice.

2. Public Security Administration: (6-digit number leader, the first two digits are the prefecture and city code; 000 is generally the code of each province and department)

Beijing: 01 Xicheng, 02 Chongwen.

Extended information:

China’s police include two categories: armed police and people’s police.

"Public security" broadly refers to the people's police, which is divided into public security police managed by the public security department (i.e. "public security" in a narrow sense, including public security, household registration, criminal investigation, transportation, etc.), and national security managed by the national security department. There are four categories: the police, the judicial police of the reform-through-labour department, and the judicial police of the court and procuratorate systems.

The people's police are national civil servants. They implement the police rank system of police supervisor, police inspector, superintendent, and police officer. Their uniforms are mainly black.

The Armed Police Force, the full name of the Chinese People's Armed Police Force, is part of the armed forces of the People's Republic of China. It is a force responsible for the security and protection tasks assigned by the state and is under the dual leadership of the State Council and the Central Military Commission.

Reference: Baidu Encyclopedia-Police Signal