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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
May electronic logging device (device (ELD) providers configure the ELD to identify potential hours of service violations? FMCSA-ELD-395-Q023(2022-03-10) 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
Would server-based events (e.g., edits and assignment of unassigned events) generate a different sequence ID than that generated by the electronic logging device (ELD)? FMCSA-ELD-395-Q061(2022-03-10) ELD Guidance
In section 4.4.2 of 49 CFR part 395, subpart B, Appendix A, the rule requires that “geo-location information must be derived from a database that contains all cities, towns, and villages with a population of 5,000 or greater and listed in ANSI INCITS... FMCSA-ELD-395-Q021(2022-03-10)-CORR1 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
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-Q042(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
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
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