Types of Signals

Question 1

Shunt limit signs?

Answer 1

2 red lights horizontal - ground position light

White rectangle with black border and red writing SHUNT LIMIT

Question 2

CD?

Answer 2

Close doors is illuminated by a member of platform staff
It is now safe to close the doors
Sign illumination Does not relate to any signal aspect
Spad trap

Question 3

Stop boards?

Answer 3

White rectangle
Red circle
Black writing STOP
Instructions written below

Question 4

Possession limit

Answer 4

Identifies the boundary of possession
Red 50p sign
Double sided
SPAD if passed without authority

Question 5

Marker boards

Answer 5

May be positioned within possession
Yellow and double sided
Red lights on entering
Yellow lights on exiting

Question 6

Right away

Answer 6

Illuminated RA sign
Station duties complete 
Train is secure
It is safe to proceed 
Right away not normally given unless the signal it applies displays a proceed aspect

Question 7

Off indicator

Answer 7

Off indicators allow guard to see if the signal is displaying a proceed aspect before giving a right away to the driver.
If signal at danger the indicator will be unlit.

Question 8

Signals not in use?

Answer 8

Covered with a white cross or if not covered will be a large white cross