Working Signalling Equipment

Question 1

If you cannot clear a stop signal, when must you clear any associated signals for a train on the approach to the signal you cannot clear? (2)

Answer 1

1. When it is controlled by the occupation of a berth track circuit.
2. The line is clear up to and including the overlap track circuit of the signal at danger.

Question 2

What must you do if you cannot set the route for the diverging junction until the train is close to the diverging signal? (3)

Answer 2

1. Take account the position of the train.
2. Take account the speed of the train.
3. Set the route if it is safe to do so.

Question 3

If a section signal stays locked when the (block) indicator is at line clear, how must you treat the signal? (1)

Answer 3

Treat the section signal as being correctly locked at danger.