Avoids using the same road multiple times. Ignored in range calculation on the Orbis map.
Avoids crossing country borders.
Avoids routes that require the use of carpool (HOV/High Occupancy Vehicle) lanes.
Avoids car trains.
Avoids ferries.
Avoids low-emission zones.
Avoids motorways.
Avoids toll roads.
Avoids tunnels.
Avoids unpaved roads.