Atlanta Regional Commission Streets

ARC documentation states that: This Theme represents a conflation of various street centerline data: GDOT's General Highway Base Map, U.S. Census Bureau's TIGER 2000 files, ARC's ARCmap database, and U.S. Forestry Commission's Forestry Maps. The conflation process was performed by The University of Georgia's Information Technology Outreach Services (ITOS) to merge geographic and attribute street data, as well as to reconcile differences between data sources.

Forestry data was obtained by referring to Forestry maps and digital orthophoto quarter quadrangles (DOQQs), then adding features to the coverage in ArcEdit. GDOT's General Highway Base Map source was digitized from mylar map sheets and overlaid on the source mylars for quality assurance. Both the TIGER 2000 and ARCmap street bases were incorporated by overlaying the sources with the coverage and importing missing features.