>>212269277That is indeed a different system. Most of our buses are run by the cities themselves. Sometimes like in my city the part that operates the buses, electricity, water, gas, rubbish removal gets so big that it's split up in independent companies that are then hired by the city. Sometimes they don't have enough buses or drivers and then they hire buses and drivers from tour companies that usually drive tourists in travel coaches to their holidays.
I don't know, but I think in principal they have to offer those jobs for additional buses to all bus companies in Europe. In practice what I see is companies from two towns over. I don't know if corruption is involved or if it's simply that those buses must get to my city, and if a company from Portugal said "we want to do it", it wouldn't be profitable for them to move their buses and drivers all across Europe.
We have S-Bahn (train-like, fewer stops but stops in different cities), U-Bahn (tram, underground in the center and district centers, over ground where possible), bus, and H-Bahn (suspended monorail at our university). Stations and schedules are checked every 10 years or so. Inspectors ride with the buses, trams and trains and count who enters or steps off at what time at every stop. This determines if the stops are still needed, if the invervals on the schedules need to be thinned out, or if the lines have to run on other streets.