Select Settings > Navigation.

Vehicle Profile

Sets the vehicle profile for each vehicle with which you will use your device.

Map & Vehicle

Sets the map detail level and the vehicle icon to display on your device.

Route Preferences

Sets the route preferences when navigating.

Driver Assistance

Sets driver assistance alerts.

Traffic

Sets the traffic details the device uses. You can set your device to avoid traffic when calculating routes, and to find a new route to your destination if a traffic delay occurs (Avoiding Traffic Delays on Your Route).

Units

Sets the unit of measure used for distances.