Data and standards
Linear referencing
Repérage linéaire
Linear referencing is a method of locating features by their position along a reference line, such as distance along a street segment. It can describe curb extents efficiently, while consistent direction, origin, units, and reference-network versions are necessary to keep regulations and observations aligned over time.
Understanding the term
Changing a road segment identifier or direction can move an apparently unchanged measure. Preserve transformation records when updating the reference network used by several systems.
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.