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Reading the regulations as they stood on September 30, 2003. Current text may differ.Switch to current
Current textIn force on Sept. 30, 2003Source: annual CFR editions 2001–2016

§ 40.1 Who does this regulation cover?

Current wording, in the annual edition revised as of Oct. 1, 2001.

govinfo, 2002 edition ↗
Before Jan. 1, 2017 the record is one snapshot per annual CFR edition, revised as of October 1. This is the 2002 edition's wording. An amendment that took effect between Oct. 1, 2002 and Sept. 30, 2003 would not appear until the next edition, so check the citations below and the Federal Register for exact effective dates.
49 CFR § 40.1 — Who does this regulation cover?. Text in force on September 30, 2003. This wording effective October 1, 2001 to present. Source: govinfo, 2002 edition, https://www.govinfo.gov/app/details/CFR-2002-title49-vol1/CFR-2002-title49-vol1-sec40-1. Retrieved from FMCSR.com, https://fmcsr.com/reg/40.1?asof=2003-09-30, on October 26, 2026. Unofficial compilation; verify against the official source.

(a) This part tells all parties who conduct drug and alcohol tests required by Department of Transportation (DOT) agency regulations how to conduct these tests and what procedures to use.

(b) This part concerns the activities of transportation employers, safety-sensitive transportation employees (including self-employed individuals, contractors and volunteers as covered by DOT agency regulations), and service agents.

(c) Nothing in this part is intended to supersede or conflict with the implementation of the Federal Railroad Administration's post-accident testing program (see 49 CFR 219.200).

Amendment history

2 distinct wordings on file since Oct. 1, 1996
  1. Oct. 1, 2001 → presentannual editions 2001–2016diff vs. previousviewing
  2. Oct. 1, 1996 → Oct. 1, 2001annual editions 1996–2000

A new entry appears whenever the regulatory words change between government snapshots. Day-precise from the eCFR (2017 onward); before that, one snapshot per annual CFR edition (revised as of October 1). Bracketed citations are the Federal Register history printed with the section.