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

§ 40.91 Authorization for use of non-evidential alcohol screening devices.

Wording first on file in the 1996 annual edition, superseded by the 2001 annual edition.

govinfo, 1999 edition ↗
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 § 40.91 — Authorization for use of non-evidential alcohol screening devices.. 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-vol1/CFR-1999-title49-vol1-sec40-91. Retrieved from FMCSR.com, https://fmcsr.com/reg/40.91?asof=1999-10-01, on October 26, 2026. Unofficial compilation; verify against the official source.

Non-evidential alcohol screening tests, performed using screening devices included by the National Highway Traffic Safety Administration on its conforming products list for non-evidential screening devices, may be used in lieu of EBTs to perform screening tests required by operating administrations’ alcohol testing regulations. Non-evidential screening devices may not be used for confirmation alcohol tests, which must be conducted using EBTs as provided in subpart C of this part.

Amendment history

5 distinct wordings on file since Oct. 1, 1996
  1. June 1, 2023 → presenteCFR, day-precisediff vs. previous
    [88 FR 27643, May 2, 2023]
  2. May 2, 2023 → June 1, 2023eCFR, day-precisediff vs. previous
    [65 FR 79526, Dec. 19, 2000, as amended at 69 FR 64867, Nov. 9, 2004]
  3. Oct. 1, 2005 → May 2, 2023annual editions 2005–2016diff vs. previous
    [65 FR 79526, Dec. 19, 2000, as amended at 69 FR 64867, Nov. 9, 2004]
  4. Oct. 1, 2001 → Oct. 1, 2005annual editions 2001–2004diff vs. previous
  5. 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.