CFR›Title 49›Subtitle B›Chapter II›Part 221›Subpart B ContainsSections 221.13–221.17CorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 Subpart B—Marking Devices Sections 221.13 § 221.13 Marking device display. 221.14 § 221.14 Marking devices. 221.15 § 221.15 Marking device inspection. 221.16 § 221.16 Inspection procedure. 221.17 § 221.17 Movement of defective equipment. Previous Appendix B to Part 221 Appendix B to Part 221—Approved Rear End Marking Devices