Abstract: At least one embodiment of a method is described including: (1) collecting probe sensor data in an area containing roads and other drivable features; (2) processing the probe sensor data in a first manner so as to create a geospatial map database including road segments, and in a second manner to derive a subset of data related to at least one segment within the geospatial map database and being indicative of an attribute thereof, (3) statistically processing the subset data per road segment to determine one or more inferred attributes thereof, (4) comparing the created geospatial map database, in particular the road segments identified therein and said inferred attributes thereof with a pre-existing geospatial map database containing road segments and attributes thereof, and where an inconsistency in the presence or absence of a road segment, or in its geometry or topology, or in any of its attributes, is identified, (5) effecting a further action, being one of: (a) Generating a change notification, (b) Gene