MTO offering extended grandfathering permits for non-SPIF Phase 4 Vehicles

In a letter received by OTA this week, MTO has advised the association they will be offering extended grandfathering permits for non-compliant vehicles covered by Phase 4 of its vehicle weights and dimensions reforms as required by regulation.  Phase 4 vehicles cover straight trucks and their trailers and is the last phase of regulatory reforms.

Automatic grandfathering of Phase 4 non-compliant (non-SPIF) vehicles will be coming to an end on December 31, 2020, and there are with three possible outcomes:

  1. The truck or trailer may be upfitted to become SPIF compliant, then operate at SPIF weight allowances;
  2. If the vehicle is less than 15 years old (20 years for cement mixers), a grandfather permit may be acquired to extend gross weight protection at pre-SPIF limits until the vehicle reaches this age; or
  3. If the vehicle exceeds above age, or no permit is acquired, it may continue to operate at reduced, non-compliant gross weights as set-out in O.Reg. 413/05, Table 32.

If a grandfather permit is acquired, the vehicle will revert to Table 32 gross weights once the vehicle reaches 15 years of age (20 years for cement mixers) and the permit expires.

Extended grandfathering permits are issued against the Vehicle Identification Number (VIN) of the vehicle in question and are fully transferable upon sale for the life of the permit. No renewal is required as this is a one-time purchase. The cost for the permit is $448.75. The application for permits will be posted on the MTO permit application website:


From 2000 to 2011, Ontario introduced a four-phased overhaul of the vehicle weights and dimensions regulations. The reforms resulted in Highway Traffic Act Regulation 413/05, Vehicle Weights and Dimensions (VWD) for Safe, Productive, and Infrastructure-Friendly (SPIF) vehicles.  SPIF vehicles are designed to perform more safely on our highways and within an acceptable amount of space. They are also designed to better protect bridges and pavement from excessive wear while maintaining industry productivity.

In June 2020, OTA put together detailed summary documents of grandfathering provisions applying to all types of non-SPIF vehicles impacted by the four phases of regulatory overhaul.  OTA members can request copies of these summaries by sending an email to


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