nüvi 2405/2505 Series Owner’s Manual 53• Dashboards—sets the map dashboardlayout.• myMapsEnabling MapsTIP: To purchase additional map products, go towww.garmin.com/maps.1 Select Settings > Map and Vehicle >myMaps.2 Select a map.Navigation SettingsSelect Settings > Navigation.• Calculation Mode—sets route preference.• Avoidances—sets road features to avoid ona route.• Custom Avoidances—allows you to avoidspecific roads or areas.• Advanced Detours—sets the length of adetour.• Limit Walking—controls the maximumwalking distance included in a pedestrianroute.• Public Transit—enables or disables transittypes.• Safe Mode—disables all functions thatrequire significant operator attention andcould become a distraction while driving.• GPS Simulator—stops the device fromreceiving a GPS signal, and saves batterypower.Route PreferencesSelect Settings > Navigation > CalculationMode.The route calculation is based on road speedsand vehicle acceleration data for a given route.• Faster Time—calculates routes that arefaster to drive but can be longer in distance.