49 C.F.R. § 236.778 Piece, driving.
Title 49 - Transportation
A crank secured to a locking shaft by means of which horizontal movement is imparted to a longitudinal locking bar.
Title 49: Transportation
PART 236—RULES, STANDARDS, AND INSTRUCTIONS GOVERNING THE INSTALLATION, INSPECTION, MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCES
Subpart G—Definitions
§ 236.778 Piece, driving.