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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
Medical Qualification FAQ – Waivers – Q3 FMCSA-BOR-MED-DRV-WAVIER-FAQ00Q3
Do I also need to file for authority to operate within the municipalities and commercial zones along the border in the U.S. if I have long-operating operating authority? FMCSA-BOR-MX LONG-HAUL-FAQ001 Mexico-domiciled motor carrier cross-border long haul operations
What happens if cellular network limitations prevent an ELD from transferring data during a U.S. roadside inspection for a Canada/Mexico domiciled motor carrier’s driver? FMCSA-BOR-HOS-ELD-395-FAQ001 Cross Border Transportation ELDs
I don't have authority from the Mexican Government's Secretaría de Comunicaciones y Transportes (SCT) yet. Can I still make application for OP-1(MX) or OP-2 authority? FMCSA-BOR-REG-FAQ008 Registration 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 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 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
When a Canada/Mexico-domiciled motor carrier’s driver is operating a commercial motor vehicle (CMV) and is stopped for an inspection in the United States (U.S.), how must the driver verify hours of service (HOS) compliance if required to use an ELD? FMCSA-BOR-HOS-ELD-395-FAQ012(2018-03-05)-CORR1 Cross Border Transportation ELDs
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 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.