Rail geometry and attributes are OpenStreetMap/Overpass-derived and should be treated as a public map dataset, not an official engineering inventory.
Some fields are incomplete or inconsistent, especially owner, voltage, speed, and signal-control tags. Missing tags appear in the completeness mode.
Contact-rail position is not explicitly tagged in this export. Over-running and under-running classifications are inferred only from strong operator or corridor context, with ambiguous cases left as position not tagged.
Reviewed corrections may supplement source records where public map tags are incomplete or ambiguous.