This is the joint picket of the three armed forces.

In order to strengthen the management of active servicemen and vehicles with military license plates, the army set up a joint picket organization jointly organized by the army, navy, air force and armed police forces in a certain area. It is mainly responsible for the management and inspection of uniformed soldiers' violation of military discipline, disheveled military appearance, illegal driving of military vehicles, illegal use of military license plates by local vehicles, and the use of fake military license plates.

It can be said that as long as people in military uniforms and cars with military cards are on the road, they have the right to manage. Because their rectification records should be reported to the management departments at a considerable level and notified, basically all military vehicles are afraid of them.

Although picketing is the guardian of military discipline, it is actually the most undisciplined group. You can refer to the public security police of township police stations and the disciplinary Committee of party organizations. The pickets in the army should leave the army early, or they will be beaten by veterans. A veteran who takes off his rank symbol will do something strange without discipline.

There are two kinds of picket, one is police picket, which can control the three armed forces and the armed police force. Second, picket, no law enforcement power, need garrison headquarters authorization to be on duty. The picket is usually served by the security detachment of the army.