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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
If a driver subject to the Electronic Logging Device (ELD) rule is stopped for a roadside inspection and does not have a required ELD installed and in use in the vehicle being operated, what will happen? FMCSA-ELD-395-Q16(2018-05-04)-CORR1 ELD Guidance
ELD FAQ16: Electronic Logging Devices and Hours of Service FMCSA-HOS-ELD-395-FAQ016 ELD Guidance
Part 390 § 390.23 Relief from regulations Part 390 § 390.23 Relief from regulations FMCSA-RG-390.23-FAQ006 Emergency Declarations
Part 390 § 390.23 Relief from regulations FAQ004 What other regulations are NOT exempted by a Declaration of Emergency? FMCSA-RG-390.23-FAQ004 Emergency Declarations
Part 390 § 390.23 Relief from regulations How do I need to identify my vehicle when providing direct assistance? What paperwork must I carry? FMCSA-RG-390.23-FAQ012 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
Part 390 § 390.23 Relief from regulations I have a truck that is not normally used commercially and a local charitable group wants me to take donated clothing and supplies to the impacted area. What do I need to know? FMCSA-RG-390.23-FAQ010 Emergency Declarations
Part 390 § 390.23 Relief from regulations Am I still exempt while returning empty from delivering an exempt load? FMCSA-RG-390.23-FAQ011 Emergency Declarations
Part 390 § 390.23 Relief from regulations What regulations are included in 49 CFR Parts 390-399? FMCSA-RG-390.23-FAQ002 Emergency Declarations
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