https://player.vimeo.com/video/673194967?h=2201ff0ed5&badge=0&autopause=0&player_id=0&app_id=58479
tfRoad uses the spline path to create the road geometry.
Drag the spline into the Spline link field to create your road geometry.
Here a Text Spline has been dropped into the Spline link field.
You can also use an xpTrail generator to create road geometry in an interesting way, as part of an xpSystem.
Drop a spline into this link field to precisely control the banking of the road, which is essential for realistic-looking curves.