Centreline of railway track, each polyline segment representing a KiwiRail asset record. Depiction of each main line, yard track, loop, and link, and identifies it's nearest location (using a KiwiRail location name) and asset ID number. Does not include Private Sidings or privately owned track. This data is suitable for mapping but not for survey accurate information or exporting to CAD for design (does not include true track geometry/design or elevation).Supplied as ESRI shapefile (polyline) in NZTM, spatial accuracy +/- 0.5mNOTE: for a simplified version of the track data for more generic mapping, please use 'NZ Railway network'.