In spite of the diesel locomotives rumbling around the yard on this particular day, the regular local trains from Prague were mostly being terminated in Senohraby, with replacement buses connecting passengers to points south. Most of the buses were old Karosas like this one, borrowed from DPP. Technically, Cercany isn't in DPP's territory, although it is in Zone 2 of PID. I don't really understand DPP's numbering system for buses. I have to assume it's seperate from the trams when it comes to vehicle numbers and not service numbers, as technially 7226 should be a Tatra T3SU tram if the system were universal.