The bus should move around the map in a circular pattern.
I don't know for sure, because I keep getting killed before I make the full loop. There should be 4-5 areas to visit based on what I've heard. Generally, the driver idles for a few minutes at each stop. When he starts honking, that is the indicator to get your arse over to the bus if you have any intention of leaving. Also, boarding the bus prematurely seems to speed things up a bit if you're feeling impatient.
Each stop has certain assets (pack a punch machine, construction components, perk a colas, etc).
At some point, I'm sure it just boils down to personal preference as to where you'd like to post up to make a stand.
The areas between serve as a no mans land where you get constantly attacked by these annoying impish frickers who claw your face. You can survive out there, but good luck dealing with that bull shite for an extended amount of time.
That's all I've got at the moment.
This post was edited on 11/15 at 12:50 pm