Historical textIn force on Oct. 1, 1996Source: annual CFR edition 1996

§ 391.101 Reasonable cause testing procedures.

Wording first on file in the 1996 annual edition, superseded by the 1998 annual edition. The section was then removed.

govinfo, 1996 edition ↗

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, 1996 and Oct. 1, 1996 would not appear until the next edition, so check the citations below and the Federal Register for exact effective dates.

49 CFR § 391.101 — Reasonable cause testing procedures.. Text in force on October 1, 1996. 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-sec391-101. Retrieved from FMCSR.com, https://fmcsr.com/reg/391.101?asof=1996-10-01, on October 26, 2026. Unofficial compilation; verify against the official source.

(a) A motor carrier shall ensure that the driver is transported immediately to a collection site for the collection of a urine sample.

(b) A motor carrier shall ensure that the test performed under the requirements of § 391.99 of this subpart conforms with 49 CFR part 40 and this subpart.

[53 FR 47151, Nov. 21, 1988, as amended at 55 FR 3556, Feb. 1, 1990]

Amendment history

1 distinct wording on file since Oct. 1, 1996

Oct. 1, 1996 → Oct. 1, 1998annual edition 1996viewing
[53 FR 47151, Nov. 21, 1988, as amended at 55 FR 3556, Feb. 1, 1990]

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.