Represents geographic extent of all route patterns. Coincident with HERE basemap.

Fields Footprint_FT and Footprint_MI represent length of each route network calculated by buffering the geographic extent of the route.

Note, this is a different methodology than the length in Route_Length. Route_Length is based on a single-line representation of the HERE network where split roadways are represented (so does not refelect the actual roads traversed in such cases) and should be used for length-based analytical calculations.