The project responds to the demands of public service customers in relation to the strengthening of suburban rail transport in the form of the extension of such transport and the requirement to introduce a new operational concept of the direct connection Plzeň-Karlova Vara. Trains will be operated in the territory of the Pilsen and Karlovy Vary regions in accordance with concluded contracts for public passenger transport services, which respect the specific conditions of the given call. 4 electric units max. 60 m long, capacity of at least 140 seats.