This system is highly used in larger cities where it often happens that several municipal and state police units arrive to the scene at the same time.
Due to their civilian status they need to obtain a D category gun license in order to be able to be armed.
Supervision of adherence to laws in specific areas is handed to authority of sworn rangers (Czech: stráž).
Rangers generally have the authority to request identification of persons in their jurisdiction and issuing fines for breaches of respective laws.
Unlike members of Municipal Police, who are also considered civilians with vested public authority, rangers are obliged to carry their firearms concealed.