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Reading the regulations as they stood on October 1, 2005. Current text may differ.Switch to current
Current textIn force on Oct. 1, 2005Source: annual CFR editions 2005–2016

§ 392.33 Obscured lamps or reflective devices/material.

Current wording, in the annual edition revised as of Oct. 1, 2005.

govinfo, 2005 edition ↗
Before Jan. 1, 2017 the record is one snapshot per annual CFR edition, revised as of October 1. This is the 2005 edition's wording. An amendment that took effect between Oct. 1, 2005 and Oct. 1, 2005 would not appear until the next edition, so check the citations below and the Federal Register for exact effective dates.
49 CFR § 392.33 — Obscured lamps or reflective devices/material.. Text in force on October 1, 2005. This wording effective October 1, 2005 to present. Source: govinfo, 2005 edition, https://www.govinfo.gov/app/details/CFR-2005-title49-vol5/CFR-2005-title49-vol5-sec392-33. Retrieved from FMCSR.com, https://fmcsr.com/reg/392.33?asof=2005-10-01, on October 26, 2026. Unofficial compilation; verify against the official source.

(a) No commercial motor vehicle shall be driven when any of the lamps or reflective devices/material required by subpart B of part 393 of this title are obscured by the tailboard, or by any part of the load or its covering, by dirt, or other added vehicle or work equipment or otherwise.

(b) Exception. The conspicuity treatments on the front end protection devices of the trailer may be obscured by part of the load being transported.

[70 FR 48025, Aug. 15, 2005]

Amendment history

2 distinct wordings on file since Oct. 1, 1996
  1. Oct. 1, 2005 → presentannual editions 2005–2016diff vs. previousviewing
    [70 FR 48025, Aug. 15, 2005]
  2. Oct. 1, 1996 → Oct. 1, 2005annual editions 1996–2004
    [33 FR 19732, Dec. 25, 1968, as amended at 60 FR 38747, July 28, 1995]

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.