Current textIn force on Sept. 30, 2016Source: annual CFR editions 2013–2016

§ 393.3 Additional equipment and accessories.

Current wording, in the annual edition revised as of Oct. 1, 2013.

govinfo, 2015 edition ↗

Compare with

Before Jan. 1, 2017 the record is one snapshot per annual CFR edition, revised as of October 1. This is the 2015 edition's wording. An amendment that took effect between Oct. 1, 2015 and Sept. 30, 2016 would not appear until the next edition, so check the citations below and the Federal Register for exact effective dates.

49 CFR § 393.3 — Additional equipment and accessories.. Text in force on September 30, 2016. This wording effective October 1, 2013 to present. Source: govinfo, 2015 edition, https://www.govinfo.gov/app/details/CFR-2015-title49-vol5/CFR-2015-title49-vol5-sec393-3. Retrieved from FMCSR.com, https://fmcsr.com/reg/393.3?asof=2016-09-30, on October 26, 2026. Unofficial compilation; verify against the official source.

The use of additional equipment or accessories in a manner that decreases the safety of operation of a commercial motor vehicle in interstate commerce is prohibited. Nothing contained in this subchapter shall be construed to prohibit the use of additional equipment and accessories, not inconsistent with or prohibited by this subchapter, provided such equipment and accessories do not decrease the safety of operation of the motor vehicles on which they are used.

[78 FR 58484, Sept. 24, 2013]

Amendment history

2 distinct wordings on file since Oct. 1, 1996

Oct. 1, 2013 → presentannual editions 2013–2016diff vs. previousviewing
[78 FR 58484, Sept. 24, 2013]
Oct. 1, 1996 → Oct. 1, 2013annual editions 1996–2012

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.