USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

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 the medical examiner restrict a driver’s duties? FMCSA-MED-391.41-Q4 Driver Physical Qualification Standards
If an interstate driver tests positive for alcohol or controlled substances under part 382, must the driver be medically re-examined and obtain a new medical examiner’s certificate to drive again? FMCSA-MED-391.41-Q5 Driver Physical Qualification Standards
Is the use of coumadin, an anticoagulant, an automatic disqualification for drivers operating CMVs in interstate commerce? FMCSA-MED-391.41-Q6 Driver Physical Qualification Standards
May a motor carrier, for the purposes of §391.41, or a State driver licensing agency, for the purposes of §383.71, accept the results of a medical examination performed by a foreign medical examiner? FMCSA-MED-391.43-Q1 Medical Certification of Foreign Drivers
May a urine sample collected for purposes of performing a controlled substances and alcohol test be used to test for diabetes as part of a driver’s FMCSA-required physical examination? FMCSA-MED-391.43-Q2 Driver Physical Qualification Examination
Is a chest x-ray required under the minimum medical requirements of the FMCSRs? FMCSA-MED-391.43-Q3 Driver Physical Qualification Examination
Does §391.43 of the FMCSRs require that physical examinations of applicants for employment be conducted by medical examiners employed by or designated by the carrier? FMCSA-MED-391.43-Q4 Driver Physical Qualification Examination
Does a medical certificate displaying a facsimile of a medical examiner’s signature meet the “signature of examining health care professional” requirement? FMCSA-MED-391.43-Q5 Signature on Medical Examiner’s Certificate
The driver’s medical exam is part of the Mexican Licencia Federal. If a roadside inspection reveals that a Mexico-based driver has not had the medical portion of the Licencia Federal re-validated, is the driver considered to be without a valid medical cer FMCSA-MED-391.43-Q6 Medical Examinations and the Mexican Licencia Federal
Is it intended that the words “person” and “driver” be used interchangeably in §391.45? FMCSA-MED-391.45-Q1 Driver Physical Qualification Examination