49 CFR § 221.1 - Scope.

---
identifier: "/us/cfr/t49/s221.1"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 221.1 - Scope."
title_number: 49
title_name: "Transportation"
section_number: "221.1"
section_name: "Scope."
chapter_name: "FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
part_number: "221"
part_name: "REAR END MARKING DEVICE—PASSENGER, COMMUTER AND FREIGHT TRAINS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 20103, 20107; 28 U.S.C. 2461 note; and 49 CFR 1.89."
regulatory_source: "42 FR 2321, Jan. 11, 1977, unless otherwise noted."
cfr_part: "221"
---


# 221.1 Scope.

This part prescribes minimum requirements governing highly visible marking devices for the trailing end of the rear car of all passenger, commuter and freight trains. So long as these minimum requirements are met, railroads may adopt additional or more stringent requirements for rear end marking devices.