49 CFR § 210.5 - Definitions.

---
identifier: "/us/cfr/t49/s210.5"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 210.5 - Definitions."
title_number: 49
title_name: "Transportation"
section_number: "210.5"
section_name: "Definitions."
chapter_name: "FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
part_number: "210"
part_name: "RAILROAD NOISE EMISSION COMPLIANCE REGULATIONS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Sec. 17, Pub. L. 92-574, 86 Stat. 1234 (42 U.S.C. 4916); 49 CFR 1.89."
regulatory_source: "48 FR 56758, Dec. 23, 1983, unless otherwise noted."
cfr_part: "210"
---


# 210.5 Definitions.

(a) *Statutory definitions.* All terms used in this part and defined in the Noise Control Act of 1972 (42 U.S.C. 4901 *et seq.*) have the definition set forth in that Act.

(b) *Definitions in standards.* All terms used in this part and defined in § 201.1 of the Railroad Noise Emission Standards, 40 CFR 201.1, have the definition set forth in that section.

(c) *Additional definitions.* As used in this part—

*Administrator* means the Federal Railroad Administrator, the Deputy Administrator, or any official of FRA to whom the Administrator has delegated authority to act in the Administrator's stead.

*Consist of a locomotive and rail cars* means one or more locomotives coupled to a rail car or rail cars.

*FRA* means the Federal Railroad Administration.

*Inert retarder* means a device or system for holding a classified cut of cars and preventing it from rolling out the bottom of a railyard.

*Inspector* means FRA inspectors or FRA specialists.

*Noise defective* means the condition in which railroad equipment is found to exceed the Railroad Noise Emission Standards, 40 CFR part 201.

*Railroad equipment* means rail cars, locomotives, active retarders, and load cell test stands.

*Standards* means the Railroad Noise Emission Standards, 40 CFR part 201. (See appendix A in this part for a listing.)