Historical textIn force on Sept. 30, 1998Source: annual CFR edition 1996
§ 392.9b Hearing aid to be worn.
Wording first on file in the 1996 annual edition, superseded by the 1998 annual edition.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, 1997 and Sept. 30, 1998 would not appear until the next edition, so check the citations below and the Federal Register for exact effective dates. govinfo does not publish the 1997 edition of Parts 300–399 in machine-readable form, so the 1996 text is shown for that year.
49 CFR § 392.9b — Hearing aid to be worn.. Text in force on September 30, 1998. 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-sec392-9b. Retrieved from FMCSR.com, https://fmcsr.com/reg/392.9b?asof=1998-09-30, on October 26, 2026. Unofficial compilation; verify against the official source.
A driver whose hearing meets the minimum requirements of § 391.41(b) (11) of this subchapter only when he/she wears a hearing aid shall wear a hearing aid and have it in operation at all times while he/she is driving. The driver must also have in his/her possession a spare power source for use in the hearing aid.
[36 FR 12857, July 8, 1971]
Amendment history
3 distinct wordings on file since Oct. 1, 1996- [78 FR 52655, Aug. 23, 2013, as amended at 81 FR 68358, Oct. 4, 2016]
- [78 FR 52655, Aug. 23, 2013]
- [36 FR 12857, July 8, 1971]
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.