CITROËN DS 5 Handbook page 288

RdS
RDS, if displayed, enables you to continue
listening to the same station by automatic
retuning to alternative frequencies.
However, in certain conditions, coverage
of an RDS station may not be assured
throughout the country as radio stations
do not cover 100 % of the territory. This
explains the loss of reception of the station
during a journey.
When the radio is displayed on the
screen, press OK to display the
contextual menu.
Select "RdS" and confirm to save.
"RdS" is displayed in the screen.
Receiving TA messages
The TA (Traffic Announcement)
function gives priority to TA alert
messages. To operate, this function
needs good reception of a radio station
transmitting this type of message.
When a traffic report is transmitted,
the current audio source (Radio, CD,
USB, ...) is interrupted automatically to
play the TA message. Normal playback
of the audio source resumes at the end
of the transmission of the message.
Press TA INFO to activate or
deactivate the reception of traffic
messages.
Receiving INFO messages
The INFO function gives priority to
TA alert messages. To be active, this
function needs good reception of a
radio station that transmits this type
of message. When a message is
transmitted, the current audio source
(Radio, CD, USB, ...) is interrupted
automatically to receive the INFO
message. Normal play resumes at the
end of the message transmission.
Make a long press on TA INFO to
display the list of categories.
Select or deselect categories to
activate or deactivate the reception of
the corresponding messages.