49 CFR § 235.3 - Application.

---
identifier: "/us/cfr/t49/s235.3"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 235.3 - Application."
title_number: 49
title_name: "Transportation"
section_number: "235.3"
section_name: "Application."
chapter_name: "FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
part_number: "235"
part_name: "INSTRUCTIONS GOVERNING APPLICATIONS FOR APPROVAL OF A DISCONTINUANCE OR MATERIAL MODIFICATION OF A SIGNAL SYSTEM OR RELIEF FROM THE REQUIREMENTS OF PART 236"
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: "49 FR 3380, Jan. 26, 1984, unless otherwise noted."
cfr_part: "235"
---


# 235.3 Application.

(a) Except as provided in paragraph (b) of this section, this part applies to railroads that operate on standard gage track which is part of the general railroad system of transportation.

(b) This part does not apply to rail rapid transit operations conducted over track that is used exclusively for that purpose and that is not part of the general system of railroad transportation.