This is a modular sci-fi highway with a Crossroad , Turn , Streetlight and Billboard. This can be used for the spline construction .
Here are 14 materials for road and it's parts, 3 materials for the Lamp and 2 materials for the Billboard.
Texel Density for the road is 12.3 for 4K maps. 

It is also compatible with this road: https://www.fab.com/listings/79b6df33-ea51-4801-ba81-4edf1fcec93a