§FMCSR.com

What changed

Every point at which a section's wording changed, was added or was removed. Day-precise from 2017 (eCFR); before that, changes surface at the annual edition that first printed them (revised as of October 1). Current through Oct. 15, 2026.

Get an email when the rules change

One email when a section of the FMCSRs is amended, added or removed, with the redline. The rules move about fifteen times a year, in clusters. No weekly filler.

191 changes in 2024

December 31, 20243 sections

December 30, 20242 sections

December 5, 20243 sections

  • amended§ 40.33What training requirements must a collector meet for urine collection?Part 40
  • amended§ 40.35What training requirements must a collector meet for oral fluid collection?Part 40
  • amended§ 40.73How is an oral fluid specimen collected?Part 40

November 18, 2024136 sections

November 13, 20241 section

November 5, 20243 sections

  • amended§ 40.33What training requirements must a collector meet for urine collection?Part 40
  • amended§ 40.35What training requirements must a collector meet for oral fluid collection?Part 40
  • amended§ 40.73How is an oral fluid specimen collected?Part 40

September 20, 20241 section

August 21, 20241 section

August 1, 20242 sections

  • amended§ 40.35What training requirements must a collector meet for oral fluid collection?Part 40
  • amended§ 40.73How is an oral fluid specimen collected?Part 40

July 17, 20243 sections

  • amended§ 367.20[Reserved]Part 367
  • amended§ 367.40Fees under the Unified Carrier Registration Plan and Agreement for Registration Year 2024.Part 367
  • amended§ 367.50Fees Under the Unified Carrier Registration Plan and Agreement for Registration Years Beginning in 2025 and Each Subsequent Registration Year Thereafter.Part 367

July 15, 20242 sections

June 21, 202417 sections

  • amended§ 40.14What collection information must employers provide to collectors?Part 40
  • amended§ 40.35What training requirements must a collector meet for oral fluid collection?Part 40
  • amended§ 40.73How is an oral fluid specimen collected?Part 40
  • amended§ 40.81What laboratories may be used for DOT drug testing?Part 40
  • amended§ 40.83How do laboratories process incoming specimens?Part 40
  • amended§ 40.97What do laboratories report and how do they report it?Part 40
  • removed§ 40.113Where is other information concerning laboratories found in this regulation?Part 40
  • amended§ 40.145On what basis does the MRO verify test results involving adulteration or substitution?Part 40
  • amended§ 40.159What does the MRO do when a drug test result is invalid?Part 40
  • removed§ 40.169Where is other information concerning the role of MROs and the verification process found in this regulation?Part 40
  • removed§ 40.189Where is other information concerning split specimens found in this regulation?Part 40
  • amended§ 40.191What is a refusal to take a DOT drug test, and what are the consequences?Part 40
  • amended§ 40.207What is the effect of a cancelled drug test?Part 40
  • removed§ 40.217Where is other information on the role of STTs and BATs found in this regulation?Part 40
  • amended§ 40.245What is the procedure for an alcohol screening test using a saliva ASD or a breath tube ASD?Part 40
  • amended§ 40.291What is the role of the SAP in the evaluation, referral, and treatment process of an employee who has violated DOT agency drug and alcohol testing regulations?Part 40
  • removed§ 40.313Where is other information on SAP functions and the return-to-duty process found in this regulation?Part 40

June 17, 20243 sections

  • amended§ 367.20Fees under the Unified Carrier Registration Plan and Agreement for registration years beginning in 2020 and ending in 2022.Part 367
  • amended§ 367.40Fees under the Unified Carrier Registration Plan and Agreement for Registration Years beginning in 2024 and each subsequent registration year thereafter.Part 367
  • added§ 367.50xxxPart 367

June 13, 20242 sections

April 26, 20242 sections

February 26, 20242 sections

January 19, 20241 section

January 16, 20244 sections

January 5, 20243 sections