With the amount of materials going back and forth between the two countries, it is only logical that Canada and the United States have reciprocity, so the country of origin may use its own set of regulations to transport dangerous goods/hazardous materials.
Carriers and shippers who ship from the U.S. to Canada, or from the Canada to the U.S., should be aware of the reciprocity agreement between the countries.
Exception. Reciprocity does not always apply. Differences do exist and additional training may be needed. If a dangerous good is regulated in Canada, but not in the United States, it must be shipped according to the Transportation of Dangerous Goods (TDG) Clear Language Regulations. Likewise, if a hazardous material is regulated in the United States, but not in Canada, it must be shipped according to 49 CFR.