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Kayla Sewell > 2 And 3 Position Signals > Flashcards

2 And 3 Position Signals Flashcards

1
Q

2 types of 2 position signals

A

Light and disc

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2
Q

What are the 5 types of 2 pos signals

A

Disc
Dwarf
Distant
Home
Calling on

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3
Q

What do 2 pos and 3 pos home signals protect?

A

Stations
Signal boxes
Sidings
Level crossing
Junctions

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4
Q

2 pos home signal at stop?

A

Points unknowns
Track ahead maybe occupied
Driver mustn’t proceed unless authorised
Next signal unknown

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5
Q

2 position at proceed

A

Points are set
Track ahead is clear until next signal
Proceed at track speed or other speed as required
Next signal in advanced is unknown

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6
Q

What aspects can a distant signal display?

A

Caution or proceed

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7
Q

What 3 situations can a distant signal be placed at caution?

A

Immediately after a train has passed the signal
Obstruction on the line
Danger on the line

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8
Q

How do you respond to a distant signal at caution

A

Train must be slowed to a precautionary speed to be able to stop safely

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9
Q

What is a calling on signal? What 2 aspects does it show?

A

A home signal fitted with a calling on (low speed caution)
It only applies to the track above it

Normal (light extinguished) and proceed (yellow light illuminated)

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10
Q

What train movements does a disc signal control?

A

Running line to running line
Running line to siding
Siding to siding
Siding to running line

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11
Q

Disc signal at stop- how is it shown by day and night and what does it mean?

A

Red disc by day and red light by night
Points may not be set
Track ahead maybe occupied
Driver mustn’t pass unless authorised
Next signal unknown

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12
Q

Disc signal at proceed- how is it shown and what does it mean?

A

Disc turned to the side by day
Green light by night
Points are set
Track may be occupied
Reduce speed cautiously being prepared to stop short of any obstruction
Next signal is unknown

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13
Q

Light type dwarf 2 pos at stop- what lights can be shown and meaning

A

Red, blue and purple light
Points not set
Track ahead may be occupied
Driver mustn’t proceed unless authorised
Next signal unknown

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14
Q

Light type dwarf 2 pos at proceed- indication and meaning?

A

Green light
Points set
Track may be occupied
Reduce speed cautiously being prepared to stop short of any obstruction
Next signal is unknown

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15
Q

What does a dwarf signal on the same post as a home signal look like?

A

Its fitted with a sign indicated siding

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16
Q

Light type dwarf signal on the same post as a home at normal- indication and meaning

A

No light is displayed
Points aren’t set
Track maybe occupied
Driver meant exceed unless authorised
Must over the aspect that is displayed on the home

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17
Q

Light type dwarf signal on the same post as a home at proceed- indication and meaning?

A

Yellow light
Track may be occupied
Reduce speed cautiously being prepared to stop short of any obstruction
Next signal is unknown

18
Q

How do you read a 2 position signal of the same class on the the one post?

A

Top to bottom left to right

19
Q

What is the type of 3 pos home signal?

A

Light

20
Q

What are the classes of 3 pos signals?

A

Home, auto and dwarf

21
Q

What do 3 pos home signals protect?

A

Stations
Signal boxes
Sidings
Level crossings
Junctions

22
Q

What do 3 pos dwarfs control the movements of?

A

Running line to running line
Running line to siding
Siding to running line
Siding to siding

23
Q

What signals are defined by absolute?

A

Home dwarf and disc
A driver can’t self authorise to themselves to pass

24
Q

What signals are described as permissive?

A

Autos driver can self authorise by following rule 1 section 3

25
Q

🟢
🔴

A

Clear normal
Points set
Track is clear
Track speed
Next signal is a proceed aspect

26
Q

🟡
🔴

A

Normal speed warning
Points are set
Track is clear
Track speed however must reduce seed to stop at next signal
Next signal is at stop

27
Q

🟡
🟢

A

Reduce to medium
Points if any are set
Track is clear
Normal track speed but must be at 40 by next signal
Next signal is at proceed
Once passed a reduce to medium and you observe next signal has improved you can resume track speed

28
Q

🔴
🟢

A

Clear medium
Points set
Track clear
Speed 40 until next signal
If in atc until train is clear of points the resume track speed
Next signal at proceed

29
Q

🔴
🟢

A

Clear medium
Points set
Track clear
Speed 40 until next signal
If in atc until train is clear of points the resume track speed
Next signal at proceed

30
Q

🔴
🟡

A

Medium speed warning
Points set
Track is clear
Speed 40 but must reduce speed preparing to stop
next signal is at stop

31
Q

🔴
🔴

A

Points not set
Track maybe occupied
Driver must set reverser to off or neutral
Next signal unknown

32
Q

🔴
🔴
🟡

A

Low speed caution
Points set
Track ahead maybe occupied
Speed max 15 must proceed cautiously being prepared to stop short of any obstructions
Next signal unknown

33
Q

What does an illuminated 65 or 80 mean on a home?

A

High speed points ahead so track speed is what is illuminated

34
Q

What does an illuminated letter an indicate and when is the only time you can observe it?

A

Only is displayed at stop
The home signal at stop is now treated as an auto
Points attached are set for mainline
Signal is now operating in auto mode
Rules that apply passing a signal at stop are the same as an auto

35
Q

Three pos dwarf
🔴🔵🟣

A

Stop
Points not set
Track maybe occupied
Driver must set reverser to off or neutral
Next signal unknown

36
Q

Three pos dwarf
🔴🔵🟣

A

Stop
Points not set
Track maybe occupied
Driver must set reverser to off or neutral
Next signal unknown

37
Q

🟡
3 pos dwarf

A

Low speed caution
Points are set
Track maybe occupied
Track speed is max 15, must proceed cautiously being prepared to stop short of any obstruction
Next signal is unknown and must be prepared to stop

38
Q

3 pos dwarf
🟢

A

Clear low speed
Points set
Track is clear
Max of 15 to next signal (if in atc until train has cleared points)
Next signal is a proceed aspect

39
Q

What is the purpose of a banner indicator?

A

It indiactes the aspect of the signal ahead where a clear view of the signal cannot be obtained.
Banner indicators are not fixed signal and are not to be considered as the signal in advanced

40
Q

What colour does these each represent
_
\
|

A
  • Is red
    \ is yellow
    | is green

Kayla Sewell (27 decks)

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