NAV (navigation system) function selection button 81
The current TMC traffic reports can be displayed in a list ⇒page 84, “TRAF
function selection button”.
Representation of traffic congestion on the map
Traffic problems received via TMC that affect your route will be displayed on
the map with a colour symbol. Traffic congestion that is not on the route is
shown on the map by a grey symbol.
Generally understood symbols are used to indicate the type of traffic conges-
tion (e.g. an “overturned vehicle” for accident). The positioning of the TMC
symbol indicates which direction is affected by the congestion.
If there is reported congestion on the route, the affected route section is
coloured red. If the reported congestion is not on the route, the affected
section of road is coloured grey. If r oute guidance is not active, all traffic
congestion will be coloured grey.
Dynamic navigation
When dynamic navigation is switched on, you will be automatically diverted
during route guidance to avoid reported traffic congestion on your route if it
is calculated that the diversion will save time ⇒page 81, “Conditions for
dynamic navigation”.
Once a traffic report that is relevant for your route has been received, a
spoken announcement will be made to inform you that the route is being
recalculated to take traffic reports into account.
A similar announcement is also given if any traffic congestion that was taken
into account in the original route calc ulation has disappeared and it has now
become possible to take a more favourable route.
Conditions for dynamic navigation
TMC (Traffic Message Channel) is a digital radio data system for the constant
transmission of traffic reports.
The unit is constantly supplied with TMC traffic reports in the background,
provided that a TMC station can be received at the current location. The quality of the traffic reports sent depends on the radio station broad-
casting them. The reception of TMC traffic reports cannot be switched on or
off.
You do not have to listen to the TMC station.
The radio-navigation system can only process and store TMC traffic reports if
the unit has access to navigation data for the area you are currently travelling
through
⇒page 49.
The current TMC traffic reports can be viewed by pressing the function
selection button ⇒page 84.
Note
•
In some situations, you may find that a diversion based on the TMC infor-
mation does not save you time as th e alternative route is also congested.
•
You can also exclude an upcoming section of the route manually if traffic
congestion ahead has not yet been recorded by TMC traffic reports
⇒ page 79.
TRAF
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