It is run by a city-owned transit authority called Regional Organiser of Prague Integrated Transport (ROPID).
Passengers must buy and validate a ticket immediately after boarding a vehicle, or before entering a metro station's paid area.
There are uniformed and plainclothes fare inspectors who randomly check passengers' tickets within the paid area; they are equipped with an inspection badge or carrier ID.
[6] Most of the inner-city services are operated by the city-owned Prague Public Transit Company (Czech: Dopravní podnik hl.
All contract operators are required to comply with the standards of Prague Integrated Transport, therefore offering a similar level of services.
City bus services in Prague were originally operated by multiple city-owned enterprises, later merged into a single entity, Dopravní podnik hl.