49 C.F.R. § 215.125 Defective uncoupling device.
Title 49 - Transportation
A railroad may not place or continue in service a car, if the car has an uncoupling device without sufficient vertical and lateral clearance to prevent— (a) Fouling on curves; or (b) Unintentional uncouplings.
Title 49: Transportation
PART 215—RAILROAD FREIGHT CAR SAFETY STANDARDS
Subpart B—Freight Car Components
Draft System
§ 215.125 Defective uncoupling device.