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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
As an electronic logging device (ELD) manufacturer, how can I make sure that my product is compliant? FMCSA-ELD-395-Q044(2022-03-10) ELD Guidance
When a driver edits an existing electronic logging device (ELD) record, how must the ELD “Event Record Origin” be set? FMCSA-ELD-395-Q045(2022-03-10) ELD Guidance
What is a motor carrier or driver required to do if they use two electronic logging devices (ELDs) that are not interoperable during a 7-day period? FMCSA-ELD-395-Q078(2022-03-10) ELD Guidance
When a driver manually enters records into an electronic logging device (ELD) how must the ELD “Event Record Origin” be set? FMCSA-ELD-395-Q046(2022-03-10) ELD Guidance
What is the responsibility of the carrier and driver pertaining to electronic logging device (ELD) diagnostic events or malfunctions that do not interfere with the accurate recording of hours of service? What would the documentation requirements be in... FMCSA-ELD-395-Q047(2022-03-10) ELD Guidance
Under section 4.6.1.2 of 49 CFR part 395, subpart B, Appendix A, the engine synchronization compliance monitoring requires the electronic logging device (ELD) to record an engine synchronization diagnostics event when it cannot acquire values for the ELD FMCSA-ELD-395-Q048(2022-03-10) ELD Guidance
Is the electronic logging device (ELD) required to retrieve the commercial motor vehicle (CMV) position from the device connected to the port, or can this be retrieved by using a smartphone or tablet? FMCSA-ELD-395-Q079(2022-03-10) ELD Guidance
In an electronic logging device (ELD) with multiple components, which component must generate the event identifier sequence number? FMCSA-ELD-395-Q080(2022-03-10)-RESCINDED 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
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