§FMCSR.com
Current textSource: eCFR

§ 382.311 Follow-up testing.

Current wording, in the annual edition revised as of Oct. 1, 2010.

eCFR (current) ↗
What changedOct. 1, 1996 wording → Oct. 1, 2010 wording (current)+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 current through October 15, 2026. This wording effective October 1, 2010 to present. Source: eCFR (current), https://www.ecfr.gov/current/title-49/section-382.311. Retrieved from FMCSR.com, https://fmcsr.com/reg/382.311, 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. previousviewing
  2. Oct. 1, 2001 → Oct. 1, 2010annual editions 2001–2009diff vs. previous
  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. Set a case date in the header to read any earlier wording.