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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
How should the electronic logging device (ELD) handle the dashboard odometer display not matching the odometer value returned by the electronic control module (ECM)? For instance, when the engine is replaced and the value is not synced. FMCSA-ELD-395-Q059(2022-03-10) ELD Guidance
If the vehicle does not track engine hours, can the record begin with “0”? FMCSA-ELD-395-Q060(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
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
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
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 FMCSA-HOS-ELD-395-FAQ51(2022-03-10)-RESCINDED ELD Guidance
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
ELD Functions FAQs FMCSA-ELD-Functions-FAQs(2022-03-10) ELD Guidance
ELD Registration and Certification FAQs FMCSA-ELD-Registration-and-Certification-FAQs(2022-03-10) ELD Guidance
ELD Malfunctions and Data Diagnostic Events FAQs FMCSA-ELD-Malfunctions-Data-Diagnostics-FAQs(2022-03-10)-CORR1 ELD Guidance