An overview of the drive modes
There are six drive modes in the full version of Autodesk Vehicle Tracking: AutoDrive Arc, AutoDrive Bearing, Manual Drive, Follow, Script and Vertical Clearance. Each may be accessed either directly from the toolbar or the drop down menu. A further drive mode allows you to insert parked vehicles.
Vehicle Tracking Roads has Manual Drive, Follow and Script but does not have AutoDrive Arc, AutoDrive Bearing, Vertical Clearance or Dynamic Editing. It does however have the Park mode.
Vehicle Tracking Rail has only one drive mode, namely Guided Drive.