U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
A device, the complete operation of which performs the three functions of unlocking, operating and locking a switch, movable-point frog or derail.
Regulations most recently checked for updates: Aug 27, 2025
A device, the complete operation of which performs the three functions of unlocking, operating and locking a switch, movable-point frog or derail.