Pontiac 2003 Bonneville Owner's Manual page 192

TRAF (Traffic): TRAF will appear on the display if the
tuned station broadcasts traffic announcements. To
receive the traffic announcement from the tuned station,
press this button. Brackets will be displayed around
TRAF and when a traffic announcement comes on the
tuned radio station you will hear it.
If the current tuned station does not broadcast traffic
announcements, press this button and the radio
will seek to a station that does. When the radio finds a
station that broadcasts traffic announcements, it will
stop. Brackets will be displayed around TRAF and when
a traffic announcement comes on the tuned radio
station you will hear it. If no station is found, NO TRAF
will appear on the display.
Traffic Interrupt Feature: Your radio can interrupt the
play of a CD, or XMTM station. Press the TRAF
button. The radio will seek to a station that broadcasts
traffic announcements. When the radio finds a station
that broadcasts traffic announcements, it will stop.
Brackets around TRAF will appear on the display. When
a traffic announcement comes on the station that was
found, you will hear it. When the traffic announcement is
over, the radio will resume play of the CD, or XMTM
station. If no station is found, NO TRAF will appear on
the display.
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