Our orignal Ford Focus had a 5000 RDS E.O.N series (with volume knob, aposed to buttons)
It had RDS Features including:

EON ( Extended Other Networks )
TA/TP ( Traffic Announcement  / Traffic Programme )
PTY ( Programme Type )
CT ( Clock Time and Date )
AF ( Alternate Frequencies )
PS ( Programme Service )

An Example Of The Display:

RDS:

RADIO 1
              NEWS    ºº
98.9FM |TP| TA-L 3 

(Picture Here)

Pre-RDS

FM  98.9
              NEWS    ºº
 FM1          TA-L   3 

On BBC National Radio (Radio 1,2,3 and 4) the 'TP' is circled. On any other stations it isnt.

The TP icon flashes with weak signals and stays on with strong signals
(except minster and ycr scarborough which dont use TP)
(Picture of Palace FM RSL without TP here)

AF has been disabled due to auto changing from hallam to tfm/ tfm to hallam (depending on which is stronger) because they both have the same PI code.

When choosing Hallam the rds display will initially say T F M    untill a strong enough signal is recived.
If this happens and the display changes to  HALLAM , TFM will briefly display  HALLAM  untill the signal is strong enough, then it will revert.
I think this is due to 'pre rds' in memory determind by the PI code so you dont have to wait as long to see the station name.

The presets were setup like this:

FM
1) TFM (96.6)
2) Century (north west 105.4)
3) Radio 1 (98.9)
4) Minster (104.7)
5) Hallam (103.4)
6) Real Radio (106.2)

7) Pulse (102.5)
8) Viking (96.9)
9) Yorkshire Coast Radio (96.2)
10) Alpha (103.2)
11) Trax (107.1)
12) Ridings (106.8)

13) Stray FM (97.2)
14) Century (North East 100.7)
15) Yorkshire Coast (brid 102.4)
16) Hallam (shef 97.4)
17) Metro (97.1)
18) Lincs FM (102.2)

AM
1) TEAMtalk 252
2) 1233 (unknown)
3) Q The Beat (1224)
4) Radio 10 FM (675)
5) Magic (1161)
6) Magic (1170)