Indicates how sure the result can be assumed to be
It is an exact match with the road type. I.e., the tag filter for the road type matched.
The road type was inferred from the maxspeed given in the input
maxspeed
It can be assumed with reasonable certainty that the match is of the given road type. I.e., the fuzzy tag filter for the road type matched.
No road type matched, falling back to the default speed limit for "other roads". No tag filter matched.