Signalling 1

Question 0

What is the purpose of signalling on the railway?

Answer 0

To ensure the safe running of trains and to ensure there is a safe distance between trains.

Question 1

What two signalling systems are on FGW network?

Answer 1

TCB - colour light

Absolute block - semaphor

Question 2

How does the signaller monitor trains on AB system?

Answer 2

By using block instruments and also bell/ buzzer codes between boxes!

Question 3

How does the signaller monitor trains on TCB system?

Answer 3

On a light panel. When a train passes through each section it is indicated on the panel with red lights

Question 4

How far is the AWS magnet away from the distant signal??

Answer 4

200 yards

Question 5

What is the purpose of an IBS and how can you identify a IBH signal?

Answer 5

They allow you to split a absolute block section so you can run more trains. The sign is a white rectangle with a thick black line through the centre

Question 6

What does the term service braking distance mean?

Answer 6

The distance it takes your traction to stop. The distance from your 1st caution to your stop signal!

Question 7

What 3 ways can a train be routed on semaphor signalling?

Answer 7

Stepped
Stacked
Stencil

Question 8

What two ways can a train be routed on colour light signalling??

Answer 8

Route indicator

Junction indicator

Question 9

What does the term permissive working mean and how is entry to a permissive working section signalled??

Answer 9

Permissive working allows two trains to be in a section at one time for shunting purposes. This is done via position lights of calling on signal

Question 10

Name 3 ways in which single lines can be operated?

Answer 10

Token less
Electric token
Token
Track circuits