Signalling Quiz

[strange6]

Q1:There are 4 semaphore signals operated by Signal Box "A" and 4 by Signal
Box "B". Trains travel in one direction only towards Box A and then onto Box
"B" The signals are passed in the following order: A1, A2, A3, A4, B1, B2, B3,
B4.
a) Which 2 signals are distant signals?
b) Which signal box has control over the release of A4 signal?
c) Which 2 signals are section signals?
d) What is the distance called between A1 and A2 signals?
e) What must the block indicator display to allow release of the section signal?

 

[Pacerpilot]

a) A1, B1
b) Box A physically controls A4 but cannot 'normally' be released without Line Clear from Box B
c) A4 B4
d) Braking Distance?
e) Line Clear

 

[steamybrian]

Here are my answers-
(a) A1 and B1
(b) A
(c) A4 and B4
(d) stopping distance
(e) line blocked

 

[strange6]

Signalling Quiz answers!

There are 4 semaphore signals operated by Signal Box "A" and 4 by Signal
Box "B". Trains travel in one direction only towards Box A and then onto Box
"B" The signals are passed in the following order: A1, A2, A3, A4, B1, B2, B3,
B4.

a) Which 2 signals are distant signals? A1 and B1
b) Which signal box has control over the release of A4 signal? "B" Box
c) Which 2 signals are section signals? A4 and B4
d) What is the distance called between A1 and A2 signals? Service braking
distance.
e) What must the block indicator display to allow release of the section signal?
"Line Clear"

 

[Tomnick]

What if B's distant was co-located with A4?

(Take a look at the arrangement on the Down at Gainsborough - before Lea Road closed - for an even more interesting arrangement!)

 

[Zoe]

A4 is not guaranteed to be the section signal either if it is an Intermediate Block Section Home.

 

[Tomnick]

Finally, who said it was Absolute Block .

In all seriousness, it's good to have something signalling-related in here - keep them coming .

 

[Zoe]

In all seriousness, it's good to have something signalling-related in here - keep them coming .

Anyone for a signal naming quiz? You would have to name the signals just by looking at a diagram.

 

[ralphchadkirk]

Anyone for a signal naming quiz? You would have to name the signals just by looking at a diagram.

Go on then - sounds fun