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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
Are drivers required to be dedicated permanently to the oilfield industry? FMCSA-HOS-395.1-Q09 Hours of Service Exceptions
Occasionally, the driver has leftover materials that must be transported back to a motor carrier facility or service depot. Would such a return trip be covered by §395.1(d)(1)? FMCSA-HOS-395.1-Q10 Hours of Service Exceptions
May specially trained drivers of specially constructed oil well servicing vehicles cumulate the 8 consecutive hoby combining off-duty time or sleeper-berth time at a natural gas or oil well site with off duty while en route to or from the well? FMCSA-HOS-395.1-Q11 Hours of Service Exceptions
How many statute miles are equivalent to 100-air-miles? FMCSA-HOS-395.1-Q12 Hours of Service Exceptions
What documentation must a driver claiming the 100-air-mile radius exemption (§395.1(e)) have in his/her possession? FMCSA-HOS-395.1-Q13 Hours of Service Exceptions
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