Curb height, metres.
Surface height above the ground, metres.
The centreline (frame-local [x, z] or [x, y, z]).
Receive shadows.
Sidewalk width per side, metres (0 = rural: a sloped verge instead of curbs).
Smoothing passes over the centreline height (removes bumps of the ground).
Resampling step along the path, metres.
Surface look (its width follows the ribbon's).
Width of the verge (rural) or sidewalk skirt sloping down to the ground, metres.
Carriageway width, metres.
Settings of a RoadPath. Plain JSON.