Historical textIn force on Oct. 1, 2012Source: annual CFR editions 1996–2012
§ 393.3 Additional equipment and accessories.
Wording first on file in the 1996 annual edition, superseded by the 2013 annual edition.
Before Jan. 1, 2017 the record is one snapshot per annual CFR edition, revised as of October 1. This is the 2012 edition's wording. An amendment that took effect between Oct. 1, 2012 and Oct. 1, 2012 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 October 1, 2012. This wording effective October 1, 1996 to October 1, 2013. Source: govinfo, 2012 edition, https://www.govinfo.gov/app/details/CFR-2012-title49-vol5/CFR-2012-title49-vol5-sec393-3. Retrieved from FMCSR.com, https://fmcsr.com/reg/393.3?asof=2012-10-01, on October 26, 2026. Unofficial compilation; verify against the official source.
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.
Amendment history
2 distinct wordings on file since Oct. 1, 1996- [78 FR 58484, Sept. 24, 2013]
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.