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9 Cards in this Set
- Front
- Back
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Definition of absolute block |
The line between the last stop signal (which can be a section signal or an intermediate block home signal) controlled from one signal box, and the home signal controlled by the next signal box |
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Block signals |
A stop signal that controls the entrance to, or exit from, a block or intermediate block section. |
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Home signal |
The first stop signal controlled by a signal box that controls the exit from an absolute block section. |
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Section signal |
A stop signal that controls the entrance to and absolute block or an intermediate block section |
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Intermediate block home signal |
A stop signal that controls the exit from an intermediate block section, and the entrance to an absolute block section |
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Clearing point |
The point beyond the home signal up to which the line must be clear before a train can be accepted. |
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Intermediate block section |
The line between the section signal and the intermediate block home signal worked by the same signal box in the same direction of travel |
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Principle of absolute block |
To PREVENT more than one train being in a section on the same line at the same time |
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Station limits |
The line between the home signal and the section signal worked by the same signal box and in the same direction of travel |
