The building description for a Bus Depot says that it "...automatically sends out buses for your bus lines". From what I've seen though, once a bus arrives at a newly-created line, it will stay on it forever. (Bus drivers in Cities: Skylines do not appear to require sleep, nor do the buses require maintenance.)

It seems to me that there isn't any real purpose in putting a bus depot anywhere in particular, as long as you plop one down somewhere on the map to unlock the Bus Line tool. Is this accurate, or am I missing some key aspect of the way buses work?

  • The only thing I could see it being important where it is, it is for noise pollution. A depot should generate noise. I'll have to check that out. Mar 26 '15 at 12:01
  • Busses start from the depot and after work they park in the depot, I have seen. So you MAY put them on the beginning of your bus lines so that they dont have to drive through your whole city when not on duty. But thats like very painstakingly optimization.
    – Trollwut
    Mar 26 '15 at 12:07

I think you've got it right, it really is that simple. A single bus depot is sufficient to supply enough buses to a city of any size1, and its position isn't really important as long as it is connected by road to any bus routes you create (if your city isn't entirely road-connected you'll need a depot in each area you want bus routes in). 

The only other thing to be concerned about is that depots create 50 noise pollution, so you probably don't want them nestled into the middle of your residential areas.

If you care about fine details, buses will need to travel from/to the depot to get to/from bus routes, this only happens when routes are created/edited/deleted (as you say, they never rest). This means new bus routes set further away from a depot take longer to start working. Also, if you change your city's bus funding (changing the number of buses on all of your lines), you might find a swarm of buses around your depot. These are temporary issues that you can probably ignore.

Also, I guess if you only have one depot and it catches fire you might have a problem, but meh.

  • I've noticed that buses return to the depot after "despawning" (because you bulldozed the road they're on or there is no longer a path to their destination), so putting the depot somewhere central means they'll get back to their route faster.
    – Brant
    Mar 26 '15 at 16:59
  • Your link to the sitenote is giving a 404 error
    – Ferrybig
    Nov 9 '18 at 20:55
  • Well spotted @Ferrybig, I've dug out the new location, thankfully I was pointing at a Dev Diary of theirs so not too hard to track down. :)
    – DMA57361
    Nov 9 '18 at 21:39

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