TITLE 49 - TRANSPORTATION

SUBTITLE B - OTHER REGULATIONS RELATING TO TRANSPORTATION

CHAPTER II - FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION

PART 234 - GRADE CROSSING SIGNAL SYSTEM SAFETY

subpart d - MAINTENANCE, INSPECTION, AND TESTING

234.227 - Train detection apparatus.

  (a) Train detection apparatus shall be maintained to detect a train or railcar in any part of a train detection circuit, in accordance with the design of the warning system.

  (b) If the presence of sand, rust, dirt, grease, or other foreign matter is known to prevent effective shunting, a railroad shall take appropriate action under 234.105, Activation failure, to safeguard highway users.