Alpine X209D Quick Reference Manual page 222

TMC is a specific application of the FM Radio Data System (RDS) used for broadcasting real-time
traffic and weather information.
If public Traffic data is broadcast at your location, Alpine Navigation System automatically
searches the FM radio stations for TMC data, and the decoded information is immediately used in
route planning.
TMC is not a global service. It may not be available in your country or region. Ask your
Note!
local dealer for coverage details.
The application automatically takes account of the traffic events received. You do not need to set
anything in Alpine Navigation System.
When Alpine Navigation System receives traffic information that may affect your route, it warns you that it
is recalculating the route. The navigation continues with a new optimal route considering the most up-to-
date traffic conditions.
For information on traffic icons, see page 21.
To fine-tune this service, you have the following options in Traffic settings (page 80):

Set the minimum amount of time that you think is worth saving at the cost of a detour.

Instruct Alpine Navigation System to have you confirm the new planned route before it takes effect.
If there are traffic events on the planned route that the application has not bypassed, the
Note!
icon opens the list of significant traffic events to let you quickly check them.
4.1.9 Intelligent navigation
With the help of intelligent navigation, the planned route can adapt to traffic and other changes during
navigation. The following sections describe these features.
4.1.9.1 Congestion detour on highways
Alpine Navigation System may offer a detour when you slow down on a highway due to a traffic jam. The
Potential congestion detour window appears and shows the length and duration of the detour.
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