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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
During an investigation, how should the header section reflect electronic logging device (ELD) data? FMCSA-HOS-ELD-TECH-395-FAQ73(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
Does the size requirement for print display listed in section 4.8.1.3(c)(1) of 49 CFR part 395 subpart B Appendix A also apply to the on-screen display? FMCSA-HOS-ELD-TECH-395-FAQ56(2022-03-10) ELD Guidance
What procedure should be followed if an electronic logging device (ELD) is replaced or reset? FMCSA-HOS-ELD-395-FAQ56(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 FMCSA-HOS-ELD-395-FAQ51(2022-03-10)-RESCINDED ELD Guidance
Are Canada- and Mexico-domiciled drivers required to use electronic logging devices (ELDs) when they are operating in the United States (U.S)? FMCSA-HOS-ELD-395-FAQ23(2022-03-10) ELD Guidance
If a driver is permitted to use a commercial motor vehicle (CMV) for personal reasons, how must the driving time be recorded? FMCSA-HOS-ELD-395-FAQ62(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
What is a manufacturer required to do when required data is not available from the electronic control module (ECM)? FMCSA-ELD-395-Q057(2022-03-10) ELD Guidance
Can an electronic logging device (ELD) provider pass the one-minute boot time rule by requiring the driver to power on the device (or an app) prior to starting the engine? FMCSA-ELD-395-Q055(2022-03-10) ELD Guidance