Route calculation, function - GF82.61-P-3011RM
MODEL 230.467 /474 /475 as of 1.6.04 with CODE (527) COMAND APS (with navigation)
MODEL 230.476 as of 1.6.04
After the destination input on the COMAND operating, display and control unit (A40/3) the route is calculated and constantly updated by the navigation processor (N41/1). This can only be calculated within the digitalized map areas. The calculated route is the prerequisite of the destination guidance system.
The navigation processor (N41/1) calculates the route using the digital versatile disk (DVD) map data, the input destination, and the current position of the vehicle. For the calculation it takes into account roads and their attributes read from the DVD map, such as one-way streets, bans on turns, road classes, etc. (where available). Here, it is possible for the user to indicate how the route should be calculated:
- Fastest route
- Shortest route
- Dynamic route
- Own selection
When "dynamic route" is selected, traffic messages received over radio (ultra-short wave (FM) or network provider) are stored in the traffic data memory integrated into the COMAND operating, display and control unit (A40/3) and automatically taken into consideration in calculating the route. The route is then calculated with the optimum time, in a manner similar to the "Fastest route" option.
Notification that the route has been recalculated taking traffic messages into consideration, is provided. Under "Own selection", the following stretches can be blocked from the route calculation:
- FREEWAY
- FERRY
- TOLL
The toll roads are marked in color on the map.
The navigation processor (N41/1) creates a list of the streets and junctions to be driven to after the route has been calculated. This route list is used for destination guidance. It may also be displayed by calling up the "Information" menu.
Route updating
If the driver deviates from the calculated route, a new route list is calculated by the navigation processor (N41/1). The current position and the direction of travel are taken into consideration. The message "New Route" appears on the display of the COMAND operating, display and control unit (A40/3) and "NEW RTE" appears on the instrument cluster (A1).
Trips outside the digitized map area
If the vehicle leaves the digitized DVD map area (e.g. driving into a multilevel car park), then no route can be calculated or updated. "OFF ROAD" appears on the display of the COMAND operating, display and control unit (A40/3). Upon leaving the map boundary (e.g. foreign country), the message "OFF MAP" appears. Destinations which lie outside of the digitalized map area cannot be taken into consideration on calculation of the route.
Bypassing traffic tailbacks through the "Detour" function
After a tailback message via traffic radio and before the route section concerned is reached, a route calculation can be arranged which bypasses the tailback. To do this, the user must press the "Bypass" button and enter the following data:
- The length of the traffic jam, including the distance to the start of the traffic jam
- The corresponding stretch must be blocked within the detailed route list.
| GPS antenna, location/task | GF82.62-P-4107RM | ||
| Navigation processor, location/task/design/function | GF82.85-P-3103RM |