What is an LT400?

An LT400 is the NZ Transport Agency certificate that a Heavy Vehicle Specialist Certifier issues upon completion of repair/modification work.

It contains:

  • Heavy Vehicle Inspector’s (Certifier’s) Name & ID
  • Vehicle Identifiers (Reg. No. & VIN / Chassis No.)
  • Certification Category
  • Description of Work (Repair, modification and/or component descriptions)
  • Code or Standard to which the component has been certified
  • Component Load Rating
  • Reference to Supporting Documentation
  • Any Special Conditions
  • Certification Expiry Date or Hubometer Reading (if applicable)
  • Heavy Vehicle Inspector’s (Certifier’s) Signature & Date

The LT400 is used to demonstrate certification to the CoF Agent and subsequently to Waka Kotahi (NZTA) that the work was undertaken and completed to the required standard(s).

Generally, the Heavy Vehicle Certifier uploads details from the completed LT400 to the NZ Transport Agency Landata computer records system, retains the original LT400 certificate and gives/emails a copy to the owner, and also to the testing station where appropriate. However, if the Heavy Vehicle Certifier issues the original LT400 certificate to the vehicle owner, the owner must immediately present it to a CoF Testing Agent to upload to Landata.

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