`surface=asphalt` can be in general assumed in many places. But it is worth tagging surface values to catch `surface=sett`/`surface=unhewn_cobblestone`/`surface

`surface=asphalt` can be in general assumed in many places. But it is worth tagging surface values to catch `surface=sett`/`surface=unhewn_cobblestone`/`surface=dirt` And yes, in some areas all roads are asphalt ones. But it is basically impossible to guess which places and where is border of "everything is asphalt here" area. So this quest is asked everywhere - it is not easy to distinguish "obviously asphalt" from "unsurveyed". And tagging at least some surface values in given area makes easier to be certain about what is obvious in a given location.