Historical textIn force on Sept. 30, 2003Source: annual CFR editions 1996–2004
§ 393.29 Grounds.
Wording first on file in the 1996 annual edition, superseded by the 2005 annual edition.
Before Jan. 1, 2017 the record is one snapshot per annual CFR edition, revised as of October 1. This is the 2002 edition's wording. An amendment that took effect between Oct. 1, 2002 and Sept. 30, 2003 would not appear until the next edition, so check the citations below and the Federal Register for exact effective dates.
49 CFR § 393.29 — Grounds.. Text in force on September 30, 2003. This wording effective October 1, 1996 to October 1, 2005. Source: govinfo, 2002 edition, https://www.govinfo.gov/app/details/CFR-2002-title49-vol4/CFR-2002-title49-vol4-sec393-29. Retrieved from FMCSR.com, https://fmcsr.com/reg/393.29?asof=2003-09-30, on October 26, 2026. Unofficial compilation; verify against the official source.
The battery ground and trailer return ground connections on a grounded system shall be readily accessible. The contact surfaces of electrical connections shall be clean and free of oxide, paint, or other nonconductive coating.
Amendment history
2 distinct wordings on file since Oct. 1, 1996A 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.