49 C.F.R. § 234.9 Grade crossing signal system failure reports.
Title 49 - Transportation
Each railroad shall report to FRA within 15 days each activation failure of a highway-rail grade crossing warning system. FRA Form No. 6180–83, “Highway-Rail Grade Crossing Warning System Failure Report,” shall be used for this purpose and completed in accordance with instructions printed on the form.
Title 49: Transportation
PART 234—GRADE CROSSING SIGNAL SYSTEM SAFETY
Subpart B—Reports
§ 234.9 Grade crossing signal system failure reports.