49 CFR § 221.3 - Application.

---
identifier: "/us/cfr/t49/s221.3"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 221.3 - Application."
title_number: 49
title_name: "Transportation"
section_number: "221.3"
section_name: "Application."
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"
---


# 221.3 Application.

(a) Except as provided in paragraph (b) of this section, this part applies to passenger, commuter and freight trains when operated on a standard gage main track which is part of the general railroad system of transportation.

(b) This part does not apply to:

(1) A railroad that operates only trains consisting of historical or antiquated equipment for excursion, educational, or recreational purposes;

(2) A train that operates only on track inside an installation which is not part of the general railroad system of transportation;

(3) Rapid transit operations in an urban area that are not connected with the general railroad system of transportation.

(4) A railroad that operates only one train at any given time.

[42 FR 2321, Jan. 11, 1977, as amended at 53 FR 28600, July 28, 1988]