The need for better communication and planning has been highlighted following the near collision of a passenger train with a freight train last year.
A report released by the Transport Accident Investigation Commission (TAIC) says the Auckland incident highlighted the need for internal audits, forward planning and adequate communication.
In January last year, a north-bound freight train was supposed to have been stopped at a Papakura to allow for a passenger train to pass through a section of rail from the opposite direction.
Potential for a head-on collision was created after a signaller, under instruction from his manager, allowed the freight train to pass through the compulsory stop.
The manager of the signallers didn't know that the freight train was scheduled to stop to allow the passenger train to pass.