I have completed TAZ updates for all 8 Counties in the Indianapolis Metro Area using TransCAD 3.5 District Manager Phase 2 Utilities developed by the Caliper Corp. Significant time saving was achieved through tagging atomized polygons. Attached is a copy of procedures used in Indianapolis. It has been expanded to cover joint operations of coding statewide zones in addition to MPO zones. It also touches on how to code statewide zones in non-MPO Counties. Sweson Yang, AICP Chief Transportation Planner Indianapolis Metro Planning Organization Phone: (317)327-5137 FAX: (317)327-5103 e-Mail: syang(a)IndyGov.org