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Front #242
ABTH 10.1
What is required before opening a hand-operated switch that is not electrically locked, if a signal governs movement over that switch?
The control operator must grant permission to operate the switch, because it is not electrically locked, and CTC is in effect
The control operator must authorize the train to enter or occupy any track where CTC is in effect before the switch is opened
A track warrant is required to enter the track at a switch that is not electrically locked where CTC is in effect
Nothing; there is a signal that governs movement of a hand-operated switch that is not electrically locked, and CTC is in effect
Answer: The control operator must authorize the train to enter or occupy any track where CTC is in effect before the switch is openedFeedback: Authority to enter CTC is always required before operating the switch whether or not it's electrically locked. Having authority first ensures the crew is not going to enter the main in front of an oncoming train or drop the signals on other trains in the area.