§FMCSR.com
Historical textIn force on Oct. 1, 2001Source: annual CFR editions 2001–2009

§ 382.311 Follow-up testing.

Wording in the annual edition revised as of Oct. 1, 2001, superseded by the 2010 annual edition.

govinfo, 2001 edition ↗
Before Jan. 1, 2017 the record is one snapshot per annual CFR edition, revised as of October 1. This is the 2001 edition's wording. An amendment that took effect between Oct. 1, 2001 and Oct. 1, 2001 would not appear until the next edition, so check the citations below and the Federal Register for exact effective dates.
What changedOct. 1, 1996 wording → Oct. 1, 2001 wording+12 added−88 removedHide

(a)The Followingrequirements afor determination under § 382.605(b) that a driver is in need of assistance in resolving problems associated with alcohol misuse and/or use of controlled substances, each employer shall ensure that the driver is subject to unannounced follow-up alcohol and/or controlled substances testing asmust directedbe byperformed a substance abuse professional in accordance with the49 provisionsCFR ofpart § 382.605(c)(2)(ii).
(b) Follow-up alcohol testing shall be conducted only when the driver is performing safety-sensitive functions40, justSubpart before the driver is to perform safety-sensitive functions, or just after the driver has ceased performing safety-sensitive functionsO.

49 CFR § 382.311 — Follow-up testing.. Text in force on October 1, 2001. This wording effective October 1, 2001 to October 1, 2010. Source: govinfo, 2001 edition, https://www.govinfo.gov/app/details/CFR-2001-title49-vol4/CFR-2001-title49-vol4-sec382-311. Retrieved from FMCSR.com, https://fmcsr.com/reg/382.311?asof=2001-10-01, on October 26, 2026. Unofficial compilation; verify against the official source.

The requirements for follow-up testing must be performed in accordance with 49 CFR part 40, Subpart O.

Amendment history

3 distinct wordings on file since Oct. 1, 1996
  1. Oct. 1, 2010 → presentannual editions 2010–2016diff vs. previous
  2. Oct. 1, 2001 → Oct. 1, 2010annual editions 2001–2009diff vs. previousviewing
  3. 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.