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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
In the ELD header, should miles driven reflect miles in the current commercial motor vehicle (CMV) or all CMVs that the driver has operated on the displayed date? What about Start End Odometer and Engine Hours? FMCSA-ELD-395-Q074(2022-03-10) ELD Guidance
To ensure that the list of self-certified electronic logging devices (ELDs) is current, ELD providers must notify FMCSA of any major changes to their device. What constitutes a major change to an ELD? FMCSA-ELD-395-Q082(2022-03-10) ELD Guidance
When should a driver use paper logs or electronic logging software if an electronic logging device (ELD) malfunction occurs? FMCSA-ELD-395-Q039(2022-03-10) ELD Guidance
Can a user edit or change automatically recorded driving time that has been recorded by an electronic logging device (ELD) to non-driving time? FMCSA-HOS-ELD-395-FAQ51(2022-03-10)-RESCINDED ELD Guidance
Can an electronic logging device (ELD) allow for a user to switch between ELD mode and automatic onboard recording device (AOBRD) mode? FMCSA-ELD-395-Q022(2022-03-10) ELD Guidance
Can a Canada/Mexico domiciled motor carrier qualify for the hours of service exemption for agricultural operations in 49 CFR 395.1(k) while delivering an agricultural commodity in the United States (U.S.) if the motor carrier picks up the commodity ... FMCSA-ELD-395-Q041(2022-03-10) ELD Guidance
Is the display required to be handed to the inspector outside of the vehicle? FMCSA-HOS-ELD-TECH-395-FAQ57(2022-03-10) ELD Guidance
How will FMCSA ensure that the electronic logging device (ELD) data is transferred securely? FMCSA-ELD-395-Q063(2022-03-10) ELD Guidance
Are Canada/Mexico domiciled motor carriers that operate in the United States (U.S.) eligible to use the exemptions for “covered farm vehicles” under 49 CFR 395.1(s), as defined in § 390.5, including the exemption from the hours of service rules and... FMCSA-ELD-395-Q043(2022-03-10) ELD Guidance
What is the resolution process if the FMCSA data transfer mechanism incorrectly rejects a data file during an electronic data transfer? FMCSA-HOS-ELD-TECH-395-FAQ83(2022-03-10) ELD Guidance