ok, a quick googling gave me that:

TP gives the traffic news broadcasting channels the power to override your radio/cassette/CD to mute the voice and tells you the broadcast news. We don's have this option here as well, so i don't care about it.

AF: alternative frequency.... if a station broadcasts on two different frequencies, and if the one you are listening to gets weak, then the radio will automatically shift you to the other one. they say it relies on RDS, so apparently the radio scans for channels that have the same RDS that you are listening to, and when your signal gets weak, it shifts to the other.... but with this logic, i think it should work in all countries, cause it's not network specific... unless in USA all stations are only licenced with one frequency, hence the FA is never put into action...

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BMW X5 3.0si 2008
Premium Package
Light Package
Navigation
Reverse Camera
Rear Sensor (retro-fit)
Comfort Access
Spare Wheel
Power folding mirrors
Voice Control w Bluetooth
Power trunklid

BMW X3 3.0i 2006
M Aerokit
M Sport Package
Navigation System
BT Handsfree
Xenon HID

BMW X5 3.0i 2001 --- SOLD