§FMCSR.com
Historical textIn force on Sept. 28, 2020Source: eCFR

§ 391.64 Grandfathering for certain drivers participating in vision and diabetes waiver study programs.

Wording effective November 19, 2019, superseded July 7, 2021.

eCFR as of September 28, 2020 ↗
49 CFR § 391.64 — Grandfathering for certain drivers participating in vision and diabetes waiver study programs.. Text in force on September 28, 2020. This wording effective November 19, 2019 to July 7, 2021. Source: eCFR as of September 28, 2020, https://www.ecfr.gov/on/2020-09-28/title-49/section-391.64. Retrieved from FMCSR.com, https://fmcsr.com/reg/391.64?asof=2020-09-28, on October 26, 2026. Unofficial compilation; verify against the official source.

(a) [Reserved]

(b) The provisions of § 391.41(b)(10) do not apply to a driver who was a participant in good standing on March 31, 1996, in a waiver study program concerning the operation of commercial motor vehicles by drivers with visual impairment in one eye; provided:

(1) The driver is physically examined every year, including an examination by an ophthalmologist or optometrist attesting to the fact that the driver:

(i) Is otherwise qualified under § 391.41; and

(ii) Continues to measure at least 20/40 (Snellen) in the better eye.

(2) The driver provides a copy of the ophthalmologist or optometrist report to the medical examiner at the time of the annual medical examination.

(3) The driver provides a copy of the annual medical certification to the employer for retention in the driver's qualification file and retains a copy of the certification on his/her person while driving for presentation to a duly authorized federal, state or local enforcement official.

[61 FR 13346, Mar. 26, 1996, as amended at 83 FR 47521, Sept. 19, 2018]

Amendment history

12 distinct wordings on file since Oct. 1, 1996
  1. March 23, 2026 → presenteCFR, day-precisediff vs. previous
  2. Feb. 19, 2026 → March 23, 2026eCFR, day-precisediff vs. previous
    [61 FR 13346, Mar. 26, 1996, as amended at 83 FR 47521, Sept. 19, 2018; 87 FR 3419, Jan. 21, 2022; 87 FR 7756, Feb. 10, 2022]
  3. March 22, 2022 → Feb. 19, 2026eCFR, day-precisediff vs. previous
    [61 FR 13346, Mar. 26, 1996, as amended at 83 FR 47521, Sept. 19, 2018; 87 FR 3419, Jan. 21, 2022; 87 FR 7756, Feb. 10, 2022]
  4. Feb. 10, 2022 → March 22, 2022eCFR, day-precisediff vs. previous
    [61 FR 13346, Mar. 26, 1996, as amended at 83 FR 47521, Sept. 19, 2018]
  5. Jan. 21, 2022 → Feb. 10, 2022eCFR, day-precisediff vs. previous
    [61 FR 13346, Mar. 26, 1996, as amended at 83 FR 47521, Sept. 19, 2018]
  6. July 7, 2021 → Jan. 21, 2022eCFR, day-precisediff vs. previous
    [61 FR 13346, Mar. 26, 1996, as amended at 83 FR 47521, Sept. 19, 2018]
  7. Nov. 19, 2019 → July 7, 2021eCFR, day-precisediff vs. previousviewing
    [61 FR 13346, Mar. 26, 1996, as amended at 83 FR 47521, Sept. 19, 2018]
  8. Nov. 19, 2018 → Nov. 19, 2019eCFR, day-precisediff vs. previous
    [61 FR 13346, Mar. 26, 1996, as amended at 83 FR 47521, Sept. 19, 2018]
  9. Sept. 19, 2018 → Nov. 19, 2018eCFR, day-precisediff vs. previous
    [61 FR 13346, Mar. 26, 1996]
  10. Oct. 1, 2013 → Sept. 19, 2018annual editions 2013–2016diff vs. previous
    [61 FR 13346, Mar. 26, 1996]
  11. Oct. 1, 2001 → Oct. 1, 2013annual editions 2001–2012diff vs. previous
    [61 FR 13346, Mar. 26, 1996]
  12. Oct. 1, 1996 → Oct. 1, 2001annual editions 1996–2000
    [61 FR 13346, Mar. 26, 1996]

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.