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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 an operation that changes its normal work-reporting location on an intermittent basis utilize the 100-air-mile radius exemption? FMCSA-HOS-395.1-Q15 Hours of Service Exceptions
Do electronic devices which are advertised as radar jammers meet the definition of a radar detector in 49 CFR 390.5T? FMCSA-RG-390.5T-Q021 Radar jammers as radar detectors
May a driver use a record of duty status form as a time record to meet the requirement contained in the 100-air-mile radius exemption? FMCSA-HOS-395.1-Q16 Hours of Service Exceptions
Is a motor vehicle drawing a non-self-propelled mobile home that has one or more set of wheels on the roadway, a driveaway-towaway operation? FMCSA-RG-390.5T-Q022 Mobile homes in driveaway-towaway operations
Is the “mandatory information” referred to in the previous guidance that required of a normal RODS under section 395.8(d) that of the 100-air-mile radius exemption under section 395.1(e)(5)? FMCSA-HOS-395.1-Q17 Hours of Service Exceptions
Can a truck tractor drawing a trailer be a driveaway-towaway operation? FMCSA-RG-390.5T-Q023 Trailers in driveaway-towaway operations
Are trailers which are stacked upon each other and drawn by a motor vehicle by attachment to the bottom trailer, a driveaway-towaway operation? FMCSA-RG-390.5T-Q024 Stacked trailers in driveaway-towaway operations
Must the driver’s name and each date worked appear on the time record prepared to comply with §395.1(e), 100-air-mile radius driver? FMCSA-HOS-395.1-Q18 Hours of Service Exceptions
The definition of a passenger CMV is a vehicle ‘‘designed to transport’’ more than 15 passengers, including the driver. Does that include standing passengers if the vehicle was specifically designed to accommodate standees? FMCSA-RG-390.5T-Q025 Does passenger capacity include standing passengers
May drivers who work split shifts take advantage of the 100-air-mile radius exemption found at §395.1(e)? FMCSA-HOS-395.1-Q19 Hours of Service Exceptions