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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 in accordance with 49 CFR 5.41, send your request to: Please identify the guidance document in your request.

Subject Agency Identifier Topic Issued Date
May a driver choose to use the sleeper berth provision some days and the other provisions of 49 CFR 395.1(g) other days? FMCSA-HOS-2020-395-FAQ09 Hours of Service
May the adverse driving conditions exception be used in concert with the revised short-haul provisions? FMCSA-HOS-2020-395-FAQ21 Hours of Service
Does the 30-minute break count against the 14-hour “driving window”? FMCSA-HOS-2020-395-FAQ18 Hours of Service
Are drivers required to annotate an adverse driving condition they encountered on their electronic logging device (ELD)? FMCSA-HOS-2020-395-FAQ15 Hours of Service
What rest periods qualify for the split sleeper berth provision? FMCSA-HOS-2020-395-FAQ02 Hours of Service
How are split sleeper berth rest periods used in determining compliance with the 14-hour "driving window" rule? FMCSA-HOS-2020-395-FAQ04 Hours of Service
If a driver takes 3 hours off-duty and then 10 consecutive hours in the sleeper berth, will the 3 hours count against the driver's 14-hour "driving window"? FMCSA-HOS-2020-395-FAQ07 Hours of Service
What is a "qualifying rest break or sleeper berth period" under the definition of adverse driving conditions? FMCSA-HOS-2020-395-FAQ11 Hours of Service
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