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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
Part 390 § 390.23 Relief from regulations How do I log my time when operating under an emergency exemption? FMCSA-RG-390.23-FAQ014 Emergency Declarations
§ 390.23 Relief from regulations Do I need to stop at weigh stations when operating under a declared emergency exemption? FMCSA-RG-390.23-FAQ013 Emergency Declarations
Cross Border Transportation FAQs FMCSA-ELD-Cross-Border-Transportation-FAQs(2018-04-09)-CORR1-RESCINDED ELD Guidance
What are the differences in the technical specifications in the 1988 automatic onboard recording device (AOBRD) Rule (49 CFR 395.15) and the Electronic Logging Device (ELD) rule? FMCSA-ELD-395-AOBRD-and-ELD-FAQ-RESCINDED ELD Guidance
Is Your Device Compliant? FMCSA-HOS-ELD-TECH-395-FAQ98 ELD Guidance
Are there prohibitions, special terms and restrictions to “long haul” operating authority? FMCSA-BOR-MX LONG-HAUL-FAQ003 Mexico-domiciled motor carrier long haul operations
Medical Qualification FAQ – Insulin Treated Diabetes Mellitus FMCSA-BOR-MED-Diabetes-FAQ001 Medical qualifications requirement for foreign-domiciled motor carriers.
Can a U.S. company lease its equipment to a Mexico-domiciled company for operations in the United States? FMCSA-BOR-LEASING-376-FAQ003 Leasing requirement for Mexico-domiciled motor carriers
Must a Canada/Mexico domiciled motor carrier’s driver using an ELD in the United States have a printer in the CMV? FMCSA-BOR-HOS-ELD-395-FAQ002 Cross Border Transportation ELDs
May a Mexico-domiciled carrier lease its equipment to a U.S. company for operations in the United States? FMCSA-BOR-LEASING-376-FAQ001 Leasing requirement for Mexico-domiciled motor carriers