Historical textIn force on Sept. 30, 1998Source: annual CFR edition 1996

§ 392.4 Drugs and other substances.

Wording first on file in the 1996 annual edition, superseded by the 1998 annual edition.

govinfo, 1996 edition ↗

Compare with

Before Jan. 1, 2017 the record is one snapshot per annual CFR edition, revised as of October 1. This is the 1996 edition's wording. An amendment that took effect between Oct. 1, 1997 and Sept. 30, 1998 would not appear until the next edition, so check the citations below and the Federal Register for exact effective dates. govinfo does not publish the 1997 edition of Parts 300–399 in machine-readable form, so the 1996 text is shown for that year.

49 CFR § 392.4 — Drugs and other substances.. Text in force on September 30, 1998. This wording effective October 1, 1996 to October 1, 1998. Source: govinfo, 1996 edition, https://www.govinfo.gov/app/details/CFR-1996-title49-vol4/CFR-1996-title49-vol4-sec392-4. Retrieved from FMCSR.com, https://fmcsr.com/reg/392.4?asof=1998-09-30, on October 26, 2026. Unofficial compilation; verify against the official source.

(a) No driver shall be on duty and possess, be under the influence of, or use, any of the following drugs or other substances:

(1) Any Schedule I drug or other substance identified in appendix D to this subchapter;

(2) An amphetamine or any formulation thereof (including, but not limited, to “pep pills,” and “bennies”);

(3) A narcotic drug or any derivative thereof; or

(4) Any other substance, to a degree which renders the driver incapable of safely operating a motor vehicle.

(b) No motor carrier shall require or permit a driver to violate paragraph (a) of this section.

(c) Paragraphs (a) (2), (3), and (4) do not apply to the possession or use of a substance administered to a driver by or under the instructions of a licensed medical practitioner, as defined in § 382.107 of this subchapter, who has advised the driver that the substance will not affect the driver's ability to safely operate a motor vehicle.

(d) As used in this section, “possession” does not include possession of a substance which is manifested and transported as part of a shipment.

[61 FR 9567, Mar. 8, 1996]

Amendment history

2 distinct wordings on file since Oct. 1, 1996

Oct. 1, 1998 → presentannual editions 1998–2016diff vs. previous
[61 FR 9567, Mar. 8, 1996, as amended at 62 FR 37153, July 11, 1997]
Oct. 1, 1996 → Oct. 1, 1998annual edition 1996viewing
[61 FR 9567, Mar. 8, 1996]

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.