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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 intrastate drivers of Commercial Motor Vehicle (CMV)s, who are required to obtain CDLs, required to be alcohol and drug tested by their employer? FMCSA-D&A-382.103-Q01 Applicability of part 382 to intrastate drivers
Is it intended that the words “person” and “driver” be used interchangeably in §391.45? FMCSA-MED-391.45-Q1 Driver Physical Qualification Examination
In a governmental entity structured into various subunits such as departments, divisions, and offices, how is the number of an employer’s drivers determined for purposes of the implementation date of controlled substances and alcohol testing? FMCSA-D&A-382.115-Q01 Implementation of drug and alcohol testing program for governmental units that employ CDL drivers
Question 2: Does §382.601 require employers to provide educational materials and policies and procedures to drivers after the initial distribution of required educational materials? FMCSA-D&A-382.601-Q02 Drug & Alcohol Testing – Educational Materials on Alcohol Misuse and Controlled Substances Use
Must all trailers be equipped with overload protective devices? FMCSA-VEH-393.28-Q02 Overload protective devices for trailers
What work may the driver perform for an employer, if a driver violates the prohibitions in subpart B? FMCSA-D&A-382.413-Q01 Drug & Alcohol Testing – Removal from Safety Sensitive Functions
Must a driver engaged in union activities affecting the employing motor carrier record such time as on-duty (not driving) time? FMCSA-HOS-395.2-Q16 Hours of Service Definitions
If a crack extended into the thickness of the glass at such an angle FMCSA-VEH-393.60-Q03 Definition of ¼” windshield crack
Driver vehicle inspection report FMCSA-VM-396.11-Q015 Driver vehicle inspection report
If a driver’s record of duty status is not signed, may enforcement action be taken on the current day’s record if it contains false information? FMCSA-HOS-395.3-Q03 Hours of Service Maximum Driving Time