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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
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
What is the commercial zone? FMCSA-BOR-CZ-372-FAQ001 Commercial zone operations
Medical Qualification FAQ – Waivers – Q2 FMCSA-BOR-MED-DRV-WAIVER- FAQ002 Medical qualifications requirement for foreign-domiciled motor carriers.
Does the 100 air-mile radius exception apply to cross-border operations? FMCSA-BOR-ELD-395-FAQ007 Cross Border Transportation ELDs
Must a driver from Canada have a record of duty status available for inspection when operating a CMV in the United States? FMCSA-BOR-HOS-395-FAQ003 Cross-border hours-of-service requirements
Medical Qualification FAQ – Controlled substances – MARIJUANA FAQ1 FMCSA-MED-DRV- Marijuana-FAQ001 Medical qualifications requirement for foreign-domiciled motor carriers.
Are there HOS regulations in the United States or Mexico that allow a driver to reset a maximum duty time period? FMCSA-BOR-HOS-395-FAQ007 Cross-border hours-of-service requirements
Which foreign country’s Commercial Licenses are reciprocally recognized for operating a CMV in the United States? FMCSA-BOR-CDL-383-FAQ001 Cross-border commercial and non-Commercial Driver License Requirements
Does a copy of the front page of the MX Certificate of Registration satisfy the regulation 387.303(b)(4) or must a carrier have all of the pages of the Certificate on board the vehicle? FMCSA-BOR-MX-FAQ001 Registration requirement for Mexico-domiciled motor carriers
After the FMCSA receives my application, what will happen next? FMCSA-BOR-MX LONG-HAUL-FAQ005 Mexico-domiciled motor carrier long haul operations