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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
Is it a violation of the Federal Motor Carrier Safety Regulations (FMCSRs) to operate a commercial motor vehicle (CMV) from the last stop to home and not show that time on the time cards? FMCSA-HOS-395.2-Q01 Hours of Service Definitions
If a CMV manufactured on or after July 25, 1980 (see § 393.42) has brake components on the front axle, and the brakes are not operable, does the vehicle comply with § 393.48? FMCSA-VEH-393.48-Q01 Is a post-1980 CMV with inoperable front brakes in compliance?
What standards under the FMCSRs must be met when a liquid fuel tank is repaired or replaced? FMCSA-VEH-393.67-Q03 Repairing/replacing liquid fuel tanks
Must an SAP evaluation be conducted in person or may it be conducted telephonically? FMCSA-D&A-382.605-Q1 Guidance on SAP evaluation
Driver Vehicle Inspection Reports FMCSA-VM-396.11-Q018 Driver vehicle inspection reports
How should multiple short stops in a town or city be recorded on a record of duty status? FMCSA-HOS-395.8-Q06 Hours of Service Records of Duty Status
Is the use of a printed or stamped signature on the Form MCS-90 endorsement acceptable? FMCSA-INS-387.15-Q003 Printed or Stamped Signature on MCS-90
Applicability of FMCSRs when schools charge trip fees FMCSA-RG-390.3T-Q011 Applicability of FMCSRs when schools charge trip fees
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
Question 4: If a driver furnished by another motor carrier is in the second carrier’s service for a period of 7 consecutive days or more, may the driver still fall under the exemption in §391.65? FMCSA-DQ-391.65-Q004 Drivers furnished by other motor carriers