Regulatory

Approved Tridem List


In order to be authorized to travel at Tridem weights in Alberta, any Service Rig with a Tridem Drive must be on the Approved Tridem List.

To add a unit to the Approved Tridem List, you must provide the following documents to the Central Permit Office of Alberta:
  • Government Weigh Scale Slip – Must show equalization of each axle within 1000 kg
  • Spec Sheet
For instructions on how to obtain the proper Tridem Split Weight, please open this document:

  Tri-Split How To


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