This is a paid asset, but now you can download Road Texture Pack Game-Ready for FREE, Please keep in mind this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
For more detail this asset from the Unity Asset Store: Click Here
Road Texture Pack Game-Ready v1
“If possible, please buy the package to support the developer”
A selection of 7 high Quality, 1024 x 1024 fully tile-able game-ready road terrain textures.
Unity 5 Ready! Assets come packaged with Game-Ready materials and Source Assets including Normal Maps, AO Maps. Albedo and Height Maps.
Unity 5 Game Ready Materials Included!
Assets included:
A Full suite of Game-Ready Road Tarmac Materials, including source Albedo, Normal, AO and Height Maps. Source Material coems in both PNG and TGA format!
