[Arnt]

There is.

Yesterday I biked over to a friend and back, different routes except the first/last 200m, both routes as green-ish as possible in the city. Say 10km along tree-lined streets, through parks, etc, and a few km elsewhere. I don't think I passed even a single of those annoying root bumps, and from this I infer that whatever city department is responsible for planting the trees knows how to do it well.

It can be done, some cities succeed almost perfectly, "everywhere" isn't.