High Quality Content by WIKIPEDIA articles! New Zealand Railways Corporation (NZRC), trading as KiwiRail Group, is the state-owned enterprise that manages, maintains and operates most of New Zealand`s rail transport system on behalf of the Crown. Its main operations include KiwiRail Freight, KiwiRail Passenger (including the brands KiwiRail Scenic Journeys and Tranz Metro), Hillside Engineering, The Interislander ferries and KiwiRail Network (formerly ONTRACK).