SIGNAL FAILURE

Question 1

Not allow a train to approach a defective position-light signal or shunting signal:

Answer 1

If a conflicting movement needs to be protected by that signal.

Question 2

May allow a train to approach a defective position-light signal or shunting signal:

Answer 2

That will not be needed to protect a conflicting movement.

And driver aware

Question 3

Must not allow a train to approach a defective stop board or a limit of shunt indicator:

Answer 3

If a conflicting movement is to be protected by that stop board or limit of shunt indicator.

Question 4

May allow a train to approach a detective stop board or limit of shunt indicator:

Answer 4

That will not be needed to protect a conflicting movement.

And driver aware