Site Feedback

Recent Changes

Updates for May 28, 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.

Effective regulations inserted from the above-dated Federal Register:
  1. 21 CFR 876
Regulations linked from the above-dated Federal Register:
  1. 18 CFR 284
  2. 33 CFR 165
Regulations inserted that were previously linked and became effective on the date listed above:
  1. 10 CFR 429 Regulation at 91 FR 22710, Apr. 28, 2026
  2. 49 CFR 209 Regulation at 91 FR 22729, Apr. 28, 2026
  3. 49 CFR 209, 213, 217, 219, 227, 229, 230, 232, 238, 239, 240, 241, 242 Regulation at 91 FR 22732, Apr. 28, 2026
  4. 49 CFR 213 Regulation at 91 FR 22735, Apr. 28, 2026
  5. 49 CFR 215 Regulation at 91 FR 22738, Apr. 28, 2026
  6. 49 CFR 222 Regulation at 91 FR 22740, Apr. 28, 2026
  7. 49 CFR 225 Regulation at 91 FR 22744, Apr. 28, 2026
  8. 49 CFR 237 Regulation at 91 FR 22747, Apr. 28, 2026
  9. 49 CFR 240 Regulation at 91 FR 22750, Apr. 28, 2026
  10. 49 CFR 240, 242 Regulation at 91 FR 22755, Apr. 28, 2026
  11. 49 CFR 242 Regulation at 91 FR 22761, Apr. 28, 2026