Update to Dangerous Goods Transport Rules

Summary#

These are final federal rules (SOR/2026-112) that update the Transportation of Dangerous Goods Regulations to match recent international codes and to rewrite the air rules in Part 12. The rules come into force on publication in the Canada Gazette, Part II (June 17, 2026), include a 12‑month transition period and require certain container designs to be retested starting July 1, 2029.

What it does#

• Harmonizes Canada’s rules with international standards:
  • Aligns the TDGR with the United Nations model (22nd edition), the IMDG Code (2022) and the ICAO Technical Instructions.
• Modernizes air transport rules (rewrites Part 12):
  • Consolidates when the ICAO rules apply and adds clearer, Canada‑specific exemptions for things like aerial work, emergency response and transport to remote sites (a defined “limited access location”).
  • Changes reporting for air: undeclared/misdeclared dangerous goods in passenger baggage move to monthly electronic reports (with timing rules), and serious incidents still must be reported quickly to CANUTEC.
• Updates how hazards are marked and documented:
  • New label and placard options (allows some text on marks, smaller sizes in specific situations, clearer rules for UN numbers and lithium battery marks).
  • Shipping documents must include ERAP reference numbers and a 24‑hour technical contact.
• Improves cross‑border reciprocity with the United States:
  • Allows, under conditions, the use of the United States 49 CFR rules for shipments between Canada and the U.S. and accepts certain U.S. special permits for returning containers with residues.
• Adds and adjusts many technical details:
  • Introduces new UN numbers and shipping names (to classify some items more accurately).
  • Incorporates updated Canadian container standards by reference (CAN/CGSB‑43.150, CAN/CGSB‑43.145, CAN/CGSB‑43.125).
  • Requires periodic retesting of registered container designs every 5 years (retest regime starts July 1, 2029).
  • Restores two provisions (evidence of marks and due diligence defence) that had been removed earlier, to avoid enforcement gaps.

Who's affected#

• Businesses that move or handle dangerous goods:
  • Carriers by road, rail, marine and air (about 1,500 air carriers; roughly 39,000 businesses in the dangerous‑goods sector overall, per the regulatory analysis).
• Container manufacturers:
  • About 137 manufacturers will need to retest registered container designs on a five‑year cycle; 65 of these are small businesses.
• Importers, exporters and consignors:
  • Those shipping internationally (especially to and from the United States) will notice the new options to use 49 CFR requirements in certain situations.
• Emergency responders and airports:
  • New labelling and clearer transport documents aim to make hazards easier to identify; reporting rules change for undeclared items found in passenger baggage.
• Government and regulators:
  • Transport Canada (and related enforcement partners) will update guidance, systems and inspection practices; some equivalency certificates (ECs) that are now needed will no longer be required.

If any part of who is affected is unclear from the rules, Transport Canada says it will issue guidance to explain the details.

Why it matters#

• Safer and clearer hazard communication: better, more consistent labels, placards and shipping names help first responders, carriers and handlers spot risks faster.
• Easier international trade with fewer duplicate rules: letting some shipments follow U.S. 49 CFR requirements and adopting UN/ICAO/IMDG changes reduces paperwork and the need for parallel documentation.
• Better service to remote communities: updated air exemptions and a clear definition of “limited access location” make it easier to fly essential fuels, batteries, paint and safety gear into places that rely on air transport.
• Costs and benefits (from the regulatory analysis):
  • Estimated net benefit of $1.05 million over 2026–2035 (present value).
  • Total monetized costs about $2.41 million (industry bears $2.39 million, government $0.02 million), mainly from container retesting.
  • Total monetized benefits about $3.46 million (industry $0.10 million, government $3.36 million).
  • Small businesses directly affected by retesting are estimated to incur about $1.12 million of the industry cost over the analysis period.
• Timing and next steps:
  • The rules are in force on Canada Gazette publication (June 17, 2026) and include a 12‑month transition. The container retest requirement starts July 1, 2029.
  • Transport Canada will publish guidance and update inspection and reporting tools to help industry comply.