In the Path Editing section, Fast Drag Mode redraws only the current point and one either side during dynamic editing. When the new point is confirmed, the whole path is recalculated and redrawn. If this box is cleared, dynamic editing will be slower but more accurate.
Default Clearance Envelope shows a clearance zone outside the actual body envelope (if shown) and/or wheel envelope (if shown) while the vehicle is ghosted during driving. This setting allows accurate control if you have fixed clearance or safety guidelines. You can edit the clearance envelope offset distance in the adjacent box.
Default Exit Overturn Distance makes the vehicle perform an exit overturn by default (turn past the normal exit point prior to turning back onto the required exit bearing). You can edit the default distance that the vehicle should deviate from its normal path.
Default Side Overturn Distance makes the vehicle perform a side overturn by default (turn in the opposite direction prior to starting a bearing turn). You can edit the default distance that the vehicle should deviate sideways.
Minimum Intermediate Grip Distance should be set to prevent too many closely spaced grips.
Predictive Turning mode draws path extents at the beginning of each section and envelope extents at the end of each section that help judge where to place target points. Note that the envelope extents for articulated vehicles represent not the absolute turning limits but the tightest turn possible without over-articulating. Thus it may be possible to turn tighter for a short distance.
Path Extents At Start Of Section show the left and right limits to the path at the last target point placed. Select and enter up to two steering percentage values. Note that these are percentages of the lesser value of the maximum non-articulating steering limits and the maximum steering angle.
Envelope Extents At Current Point show the left and right limits of the body envelope at the cursor. Select and enter up to two steering percentage values. Note that these are percentages of the lesser value of the maximum non-articulating steering limits and the maximum steering angle.
The Snap Drive setting Snap To Vehicle Tracking Objects causes vehicles to snap to valid routes through junctions and parking bays.