CFR > Title 49 - Transportation > SUBTITLE B—Other Regulations Relating to Transportation > CHAPTER II—FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (Parts 200–269) > PART 234—GRADE CROSSING SIGNAL SYSTEM SAFETY AND STATE ACTION PLANS > SUBPART D—Maintenance, Inspection, and Testing (§234.201 to §234.275) > 234.229—Shunting sensitivity.

234.229—Shunting sensitivity.

Each highway-rail grade crossing train detection circuit shall detect the application of a shunt of 0.06 ohm resistance when the shunt is connected across the track rails of any part of the circuit.