Data and standards
Geographic information system (GIS)
Système d’information géographique (SIG)
Geographic information system (GIS) is a system for storing, analyzing, and presenting information linked to geographic locations. A curb GIS can connect street geometry, regulations, assets, and observations, but reliable analysis requires consistent coordinate systems, spatial accuracy, update practices, and clear relationships between physical features and legal areas.
Understanding the term
A map layer can show a zone without proving its legal extent. Keep source documents and survey provenance connected to the geometry used for decisions.
An implementation should document its version, identifiers, time conventions, geographic accuracy, and supported fields. Test representative exchanges between the actual participating systems, including exceptions and updates. Assign responsibility for correcting discrepancies between published information, legal records, and the street. Collect only information needed for a defined purpose and apply suitable access and retention controls. A successful technical exchange does not by itself prove that the data is current, legally authoritative, or suitable for enforcement.