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Regulatory Guidance

Welcome to the FMCSA Guidance Portal. This web portal is a searchable, indexed database that contains and links to all guidance documents in effect from the Federal Motor Carrier Safety Administration. The guidance documents lack the force and effect of law, unless expressly authorized by statute or incorporated into a contract.

To comment on any guidance document, or to request issuance, reconsideration, modification, or rescission of any guidance document, please identify the guidance document in your request and send it to: FMCSAguidance@dot.gov. NOTE: The FMCSAguidance mailbox is not intended to serve as a mailbox for general inquiries. For inquiries that go beyond the limited purpose of the FMCSAguidance mailbox, please call FMCSA's Information Line (800-832-5660) or visit FMCSA's "Contact Us" page to send your inquiry to the appropriate mailbox.

Subject Agency Identifier Topic Issued Date
Can a Mexico-domiciled carrier lease its equipment to another Mexico-domiciled company for operations in the United States? FMCSA-BOR-LEASING-376-FAQ002 Leasing requirement for Mexico-domiciled motor carriers
What is the restriction identified on a Canadian Commercial License for a Canadian driver when they are not permitted to operate in the United States for medical reasons? FMCSA-BOR-CDL-383-FAQ003 Cross-border commercial and non-Commercial Driver License Requirements
Are Canadian commercial drivers who transport any liquid or gaseous material in a tank having a rated capacity of 1,000 gallons or more or multiple tanks having an individual rated capacity of more than 119 gallons and an aggregate capacity of 1,000 FMCSA-BOR-CDL-383-FAQ006 Cross-border commercial and non-Commercial Driver License Requirements.
Is a Canada/Mexico domiciled motor carrier’s driver, who is exempt under the 100 air-mile radius exception, still exempt from using an ELD when entering the United States more than 8 times in a 30-day period? FMCSA-BOR-HOS-ELD-395-FAQ010 Cross Border Transportation ELDs
Medical Qualification FAQ – CANADIAN Medical Certificates - FAQ1 FMCSA-BOR-MED-MedicalCertficate-FAQ001 Medical qualifications requirement for foreign-domiciled motor carriers
Medical Qualification FAQ – Controlled substances – FAQ2 FMCSA-MED-DRV- Marijuana-FAQ2 Medical qualifications requirement for foreign-domiciled motor carriers
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
Does the 100 air-mile radius exception apply to cross-border operations? FMCSA-BOR-ELD-395-FAQ007 Cross Border Transportation ELDs
Requirement that commercial motor vehicle (CMV) drivers operating in the United States in interstate commerce, except drivers of passenger-carrying CMVs, submit, and motor carriers retain FMCSA-BOR-DVIR-396-FAQ001 Driver vehicle inspection reports
May a Mexico-domiciled carrier operate in the U.S. with a copy of the completed commercial zone application in the vehicle and be in compliance with the regulations? FMCSA-BOR-CZ-372-FAQ-002 Commercial zone operations