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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
My certificate of registration says I can carry exempt commodities. What are exempt commodities? FMCSA-BOR-MX-FAQ002 Registration requirement for Mexico-domiciled motor carriers
What insurance and proof of financial responsibility do I need to operate in the U.S.? FMCSA-BOR-MX-FAQ003 Insurance requirement for Mexico-domiciled motor carriers
What must a Canada/Mexico domiciled motor carrier’s driver do if an ELD malfunction prevents presenting HOS to a safety official at roadside by electronic data transfer, display screen or printout? FMCSA-BOR-HOS-ELD-395-FAQ004 Cross Border Transportation ELDs
Must the files that I maintain in order to comply with the FMCSRs be in English? FMCSA-BOR-MX-FAQ004 Recordkeeping requirement for Mexico-domiciled motor carriers
My trucks have both Mexico and U.S. license plates. Can I put my MX Number and my MC Number on the same truck? FMCSA-BOR-MX-FAQ005 Vehicle marking requirement for Mexico-domiciled motor carriers
Can a Canada/Mexico-domiciled motor carrier’s driver use a portable ELD unit, smartphone, or other wireless device as an ELD when operating in the United States (U.S.)? FMCSA-HOS-ELD-TECH-395-FAQ74(2018-03-05)-CORR1 ELD requirements for foreign-domiciled motor carriers
ELD FAQ 71: ELDs Canada & Mexico FAQ – Technical Specifications – Q3 FMCSA-HOS-ELD-395-FAQ71-RESCINDED ELD requirements for foreign-domiciled motor carriers
Are Canadian Armed Forces exempt from the Federal Motor Carrier Safety Regulations (FMCSRs), including the ELD requirements, if they have proper documentation when operating in the United States? FMCSA-HOS-ELD-395-FAQ71 ELD requirements for foreign-domiciled motor carriers
Medical Qualification FAQ – Waivers – Q1 FMCSA-BOR-MED-DRV-WAIVER-FAQ001 Medical qualifications requirement for foreign-domiciled motor carriers.
Medical Qualification FAQ – Waivers – Q4 FMCSA-BOR-MED-DRV-WAIVER-FAQ004 Medical qualifications requirement for foreign-domiciled motor carriers.