Hey @LuhBonettoRD!
So you can simply use a static meshes here, and have them set to “Hidden in game → True.” You will want to use PLANES though, not box collision. You can make your own static mesh using a plane, and then open that mesh, give it collision, and set it to “Hidden in game” all on the static mesh itself.
Then, you can have the spline spawn these at a certain X position offset from the center of the spline.
Because the thing is, when you go from piece to piece of the road, it’ll trigger, as a box is 2D. Maybe use one on each side of the road/ one in the middle?
Hope that helps!