The bus would be thing...apposed to a person or place or idea
The audio bus, USB bus, HDD bus...
MCA
it depends on the type of bus
address bus
That just depends on the type of bus, and how many passengers are on the bus, as well as the net weight of all the passengers on that bus.
address bus, data bus
It`s universal Serial Bus
in bus
go to google.com and type in bus driver download
it uses a PCIe BUS
USB bus
that all depends on the type of bus it is