Historical textIn force on Oct. 1, 1999Source: annual CFR editions 1996–2000

§ 382.311 Follow-up testing.

Wording first on file in the 1996 annual edition, superseded by the 2001 annual edition.

govinfo, 1999 edition ↗

Compare with

Before Jan. 1, 2017 the record is one snapshot per annual CFR edition, revised as of October 1. This is the 1999 edition's wording. An amendment that took effect between Oct. 1, 1999 and Oct. 1, 1999 would not appear until the next edition, so check the citations below and the Federal Register for exact effective dates.

49 CFR § 382.311 — Follow-up testing.. Text in force on October 1, 1999. This wording effective October 1, 1996 to October 1, 2001. Source: govinfo, 1999 edition, https://www.govinfo.gov/app/details/CFR-1999-title49-vol4/CFR-1999-title49-vol4-sec382-311. Retrieved from FMCSR.com, https://fmcsr.com/reg/382.311?asof=1999-10-01, on October 26, 2026. Unofficial compilation; verify against the official source.

(a) Following a 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 as directed by a substance abuse professional in accordance with the provisions of § 382.605(c)(2)(ii).

(b) Follow-up alcohol testing shall be conducted only when the driver is performing safety-sensitive functions, just before the driver is to perform safety-sensitive functions, or just after the driver has ceased performing safety-sensitive functions.

Amendment history

3 distinct wordings on file since Oct. 1, 1996

Oct. 1, 2010 → presentannual editions 2010–2016diff vs. previous
Oct. 1, 2001 → Oct. 1, 2010annual editions 2001–2009diff vs. previous
Oct. 1, 1996 → Oct. 1, 2001annual editions 1996–2000viewing

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.