Route calculation, function - GF82.61-P-3011DA

MODEL 215, 220 with CODE (352a) COMAND operating and display system with CODE (494a) USA version 

After the driver has entered the destination using the COMAND operating, display and control unit (A40/3), the navigation processor calculates and constantly updates the route. The route can only be calculated within the digitized map areas. The calculated route is the required for navigation.

In vehicles as of 1.9.03, the navigation processor (N41/1) is installed as a separate control unit on the left-hand side of the trunk.

Route calculation 

The navigation processor calculates the route with the help of the DVD map data, the destination entered by the driver and the current position of the vehicle. For the calculation the processor takes into account the roads and attributes read from the DVD map such as one-way streets, turn prohibitions, road classes, etc.).

Here, it is possible for the driver to indicate how the route should be calculated.

The route is then calculated to give the fastest route (shortest driving time). The navigation processor informs the driver that the route has been recalculated taking traffic messages into consideration.

The driver can use the "my selection" function to exclude the following from the route calculation:

• FREEWAY
• FERRY
• TOLL ROADS

Following the calculation of the route, the navigation processor generates a list of roads and junctions to be driven along. This route list is used for navigation. This list can also be accessed from the "Information" menu.

As of 1.9.02 toll roads are shown in a different color on the map.

Route updating 

If the driver deviates from the calculated route, the navigation processor calculates a new route list. The current position and the direction of travel are taken into consideration, and the new route is optimized accordingly.

The message "New Route" appears on the display.

Trips outside the digitized map area 

If the vehicle leaves the digitized DVD map area (e.g. driving on a dirt road or in a parking garage), a route cannot be calculated or updated.

"OFF ROAD" appears on the display.

Upon leaving the map boundary (e.g. foreign country), the message "OFF MAP" appears.

Destinations which are outside of the digitized map area cannot be taken into consideration when calculating the route.

Circumventing traffic jams with "Traffic jam" button function 

Following a traffic jam message via a traffic information radio channel, a route which circumvents the traffic jam can be calculated before the relevant stretch is reached. To do this, the driver must press the "DETR" button and select the following settings:

• The length of the traffic jam, including the distance to the start of the traffic jam must be entered
• The corresponding stretch must be blocked in the detailed route list.

The "Traffic jam" function is available for Federal and State highways as well as for inner city areas.

Navigation, function

GF82.61-P-3012CA