49 CFR § 234.249 - Ground tests.

---
identifier: "/us/cfr/t49/s234.249"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 234.249 - Ground tests."
title_number: 49
title_name: "Transportation"
section_number: "234.249"
section_name: "Ground tests."
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"
---


# 234.249 Ground tests.

A test for grounds on each energy bus furnishing power to circuits that affect the safety of warning system operation shall be made when such energy bus is placed in service and at least once each month thereafter.