49 CFR § 234.235 - Insulated rail joints.

---
identifier: "/us/cfr/t49/s234.235"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 234.235 - Insulated rail joints."
title_number: 49
title_name: "Transportation"
section_number: "234.235"
section_name: "Insulated rail joints."
chapter_name: "FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
part_number: "234"
part_name: "GRADE CROSSING SAFETY"
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, 20152, 20160, 21301, 21304, 21311, 22907 note; 28 U.S.C. 2461 note; and 49 CFR 1.89."
regulatory_source: "61 FR 31806, June 20, 1996, unless otherwise noted."
cfr_part: "234"
---


# 234.235 Insulated rail joints.

Each insulated rail joint used to separate train detection circuits of a highway-rail grade crossing shall be maintained to prevent current from flowing between rails separated by the insulation in an amount sufficient to cause a failure of the train detection circuit.