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Reporting and responding to a Condition Affecting the Network (CAN)

It is critical for workers to effectively respond to incidents on the rail network in the first instance. These first actions may enable fast and effective intervention and may greatly reduce the risk of harm to people and damage to infrastructure.

Network Rules has prepared some additional guidance for Network Controllers, Signallers and Qualified Workers on how to report and respond to a CAN.

Qualified Worker

Network Controller

  • Tell and advise other affected Network Controllers, Signallers and nominated Operators' Representatives


    • To warn Drivers and Track Vehicle Operators of rail traffic approaching the affected portions of track
    • To prevent rail traffic from approaching the affected portions of track, and make sure blocking facilities are applied
    • For the 1500V supply to be isolated in accordance with NGE 228 Unplanned removal of 1500V supply.


  • Communicate CAN form details through Qualified Worker or directly to Drivers and Track Vehicle Operators
  • Restrain rail traffic when blocking facilities cannot be applied.

Protection Officer

  • Obtain appropriate work on track authority of work on track method for infrastructure restoration work arising from CAN.

Maintenance Representative

  • Certify line as safe for rail traffic.


  • End restraint of rail traffic.

Network Controller

  • Authorise return to normal operations.