When operating in the United States, should a Canadian commercial driver continue to operate under the Canadian HOS regulations?
FMCSA-BOR-HOS-395-FAQ001
Cross-border hours-of-service requirements
FAQ001: When operating in the United States, should a Canadian commercial driver continue to operate under the Canadian HOS regulations?
No. A Canadian CMV driver must comply with the U.S. HOS regulations (49 CFR part 395) when operating in the United States. Drivers must also ensure that they comply with the Canadian HOS regulations (SOR/2005-313) when they return to Canada.