How I make a road collider?

Hello everyone!

I’m making a game in unity and I do not want my car goes off the road, in the unity car tutorial the track have a road collider, I want to make a collider like that, someone could help me? someone has a tutorial that explain that? I await response Thanks!

Just make two cubes, size and position them, and turn off the mesh renderer. You dont need any special “road collider”.