What term refers to an electrically operated locking device within signalized territory affixed to a manually operated switch or derail to control its use?

What term refers to an electrically operated locking device within signalized territory affixed to a manually operated switch or derail to control its use?

• A. Energize
• B. Emergency Braking
• C. False Occupancy
• D. Electric Switch Lock

Answer: (D)

Electric Switch Lock is the term for an electrically operated locking device attached to a manually operated switch or derail in signalized territory. This lock ties the ability to move the switch to the signaling interlocking, so a switch cannot be operated unless the route is safely prepared and authorized. It keeps the switch secured while a train is approaching or occupying the area, preventing unauthorized or unsafe movements. When the interlocking clears the route, power to the lock is released for operation, and after the switch is moved, the lock re-engages to hold it in the new position. This concept is distinct from simply energizing equipment, emergency braking, or false occupancy signaling.

Electric Switch Lock is the term for an electrically operated locking device attached to a manually operated switch or derail in signalized territory. This lock ties the ability to move the switch to the signaling interlocking, so a switch cannot be operated unless the route is safely prepared and authorized. It keeps the switch secured while a train is approaching or occupying the area, preventing unauthorized or unsafe movements. When the interlocking clears the route, power to the lock is released for operation, and after the switch is moved, the lock re-engages to hold it in the new position. This concept is distinct from simply energizing equipment, emergency braking, or false occupancy signaling.