Home › CFR › Title 49 › Part 22149 CFR Part 221 — Rear End Marking Device—Passenger, Commuter and Freight TrainsSubpart A — General§ 221.1— Scope.§ 221.3— Application.§ 221.5— Definitions.§ 221.7— Civil penalty.§ 221.9— Waivers.§ 221.11— State regulation.Subpart B — Marking Devices§ 221.13— Marking device display.§ 221.14— Marking devices.§ 221.15— Marking device inspection.§ 221.16— Inspection procedure.§ 221.17— Movement of defective equipment.