Alpine X209D Quick Reference Manual page 221


While driving without a planned route: Smart Zoom zooms in if you drive slowly and zooms out
when you drive at a high speed.
4.1.6 Speed limit warning
Maps may contain information about the speed limits of the road segments. Alpine Navigation System is
able to warn you if you exceed the current limit. This information may not be available for your region, or
may not be fully correct for all roads on the map.
The maximum speed set in the vehicle profile (page 70) is also used for this warning. Alpine Navigation
System alerts you if you exceed the pre-set value even if the legal speed limit is higher.
Speed warning can be fine-tuned in Warnings. See page 75.
You can also set the relative speed tolerance above which the application initiates the warning.
The following warning types are available:

Audio warning: You receive a verbal warning when you exceed the speed limit with the given
percentage.

Visual warning: The current speed limit is shown on the map when you exceed it (for example
).
You can also choose to see the speed limit sign on the map all the time.
4.1.7 Historical traffic
If statistical traffic information is stored with the map data, Alpine Navigation System can take them into
account when planning a route. In normal cases, these statistics help you avoid usual traffic jams on the
given day of week in the given hour but in some cases like on public vacations that fall on normal
weekdays, they can be misleading. You can enable or disable this feature in Traffic settings. See page
80.
4.1.8 Real-time traffic
Real-time traffic information can provide you with the current status of the traffic. Route calculation can
avoid road blocks or unexpected traffic jams caused by an accident.
The following data sources are available:

Traffic Message Channel (TMC):
62