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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
Do the Federal Motor Carrier Safety Administration’s (FMCSA) alcohol and controlled substances testing regulations apply to employers and drivers in U.S. territories or possessions such as Puerto Rico and Guam? FMCSA-D&A-382.103-Q06 Applicability of drug and alcohol testing requirements to employers and drivers domiciled in the U.S. territories or possessions such as Puerto Rico and Guam
Is a foreign resident driver operating between the U.S. and a foreign country from a U.S. terminal for a U.S.-based employer subject to the Federal Motor Carrier Safety Administration’s (FMCSA) alcohol and controlled substances testing regulations? FMCSA-D&A-382.103-Q08 Applicability of drug and alcohol testing requirements to foreign drivers operating for a U.S.-based employer
What alcohol and drug testing provisions apply to foreign drivers employed by foreign motor carriers? FMCSA-D&A-382.103-Q09 Applicability of Section 382.105
§391.15 Disqualification of drivers. FMCSA-DQ-391.15-Q002 Driver disqualification
What does a Breath Alcohol Technician (BAT) do when a test involves an independent, self-employed owner-operator with a confirmed alcohol concentration of 0.02 or greater, to notify a company representative as required by §40.65(i)? FMCSA-D&A-382.105-Q01 Applicability of Section 382.105
Is a driver who is on-duty, but has not been assigned a driving task, considered to be ready to perform a safety-sensitive function as defined in §382.107 subjecting the driver to random alcohol testing? FMCSA-D&A-382.305-Q01 Guidance on whether a driver who is on-duty, but has not been assigned a driving task, is considered to be ready to perform a safety-sensitive function
§391.15 Disqualification of drivers. FMCSA-DQ-391.15-Q003 Driver disqualification
A driver does not have a photo identification card. Must an employer representative identify the driver in the presence of the Breath Alcohol Technician (BAT)/urine specimen collector or may the employer representative identify the driver via a telephone FMCSA-D&A-382.105-Q02 Applicability of Section 382.105
§391.15 Disqualification of drivers. FMCSA-DQ-391.15-Q004 Driver disqualification
Will foreign drug testing laboratories need to be certified by the National Institute on Drug Abuse (NIDA)? Will they need to be certified by the Department of Health and Human Services (DHHS)? FMCSA-D&A-382.105-Q03 Applicability of Section § 382.105