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Recent Changes

Updates for May 16, 2026 - May 18, 2026

The Office of the Federal Register updates the material in the eCFR on a daily basis. While we do not make updates in real-time, generally the eCFR is current within two business days.

You can learn more about how the eCFR is updated here.

Reader Aids

Reader Aids help people use and understand the eCFR. Reader Aids information is not published in the Code of Federal Regulations.

Regulations linked from the above-dated Federal Register:
  1. 33 CFR 100.T0199-0903, 110.155, 165.T01-0903
  2. 49 CFR 563, 585
  3. 50 CFR 217
Regulations inserted that were previously linked and became effective on the date listed above:
  1. 7 CFR 16 Regulation at 91 FR 20577, Apr. 17, 2026
  2. 15 CFR 28 Regulation at 91 FR 20335, Apr. 16, 2026
  3. 21 CFR 890 Regulation at 91 FR 20362, Apr. 16, 2026
  4. 40 CFR 52.120 Regulation at 91 FR 20367, Apr. 16, 2026
  5. 40 CFR 52.220a Regulation at 91 FR 20365, Apr. 16, 2026
  6. 40 CFR 52.2420 Regulation at 91 FR 20589, Apr. 17, 2026
  7. 40 CFR 81 Regulation at 91 FR 20371, Apr. 16, 2026