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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
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
ELD Malfunctions and Data Diagnostic Events FAQs FMCSA-ELD-Malfunctions-Data-Diagnostics-FAQs(2022-03-10)-CORR1 ELD Guidance
Can a driver edit their ELD data after leaving the vehicle? FMCSA-ELD-395-Q026(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
How should the Time Zone Offset from UTC handle daylight savings time? FMCSA-HOS-ELD-TECH-395-FAQ26(2022-03-10) ELD Guidance
May a driver use yard moves to satisfy the 30-minute break requirement? FMCSA-HOS-2020-395-FAQ20 Hours of Service
Does the 30-minute break have to be consecutive? FMCSA-HOS-2020-395-FAQ17 Hours of Service
May a driver use the adverse driving conditions provision even if the adverse conditions have cleared when the driver arrives at the location where the condition occurred? FMCSA-HOS-2020-395-FAQ14 Hours of Service
Are there any restrictions on how often the adverse driving conditions exception may be used? FMCSA-HOS-2020-395-FAQ12 Hours of Service
May a 10-consecutive hour off-duty period be paired with a subsequent qualifying 7+-consecutive hour sleeper berth period? FMCSA-HOS-2020-395-FAQ05-RESCINDED Hours of Service