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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
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 FMCSA-ELD-395-AOBRD-and-ELD-FAQ-RESCINDED ELD Guidance
Cross Border Transportation FAQs FMCSA-ELD-Cross-Border-Transportation-FAQs(2018-04-09)-CORR1-RESCINDED ELD Guidance
Is Your Device Compliant? FMCSA-HOS-ELD-TECH-395-FAQ98 ELD Guidance
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ELD FAQ 71: ELDs Canada & Mexico FAQ – Technical Specifications – Q3 FMCSA-HOS-ELD-395-FAQ71-RESCINDED ELD requirements for foreign-domiciled motor carriers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 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
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.
If a Canada/Mexico domiciled company with a terminal in the United States dispatches a driver from one of its Canada/Mexico location to move a vehicle to its U.S. terminal for use in the U.S., is the vehicle move considered a driveaway/towaway operation? FMCSA-BOR-HOS-ELD-395-FAQ009-RESCINDED Cross Border Transportation ELDs
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
Medical Qualification FAQ – Controlled substances – FAQ2 FMCSA-MED-DRV- Marijuana-FAQ2 Medical qualifications requirement for foreign-domiciled motor carriers