49 C.F.R. § 234.261 Highway traffic signal pre-emption.
Title 49 - Transportation
Highway traffic signal pre-emption interconnections, for which a railroad has maintenance responsibility, shall be tested at least once each month.
Title 49: Transportation
PART 234—GRADE CROSSING SIGNAL SYSTEM SAFETY
Subpart D—Maintenance, Inspection, and Testing
Inspections and Tests
§ 234.261 Highway traffic signal pre-emption.
