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Cert IV in Train Driving (Metro Trains) > Signals > Flashcards

Signals Flashcards

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1
Q

What are the two types of signals?

A
  • 2 position
  • 3 position
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2
Q

What are the 2 types of 2 position signals?

A
  • light
  • disc
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3
Q

What are the 5 classes of 2 position signals?

A
  • home
  • disc
  • dwarf
  • distant
  • calling on
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4
Q

What aspects can home, normal dwarf and disc signals display? (2 position)

A
  • stop
  • proceed
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5
Q

What 2 aspects can a distant signal show? (2 position)

A
  • caution
  • proceed
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6
Q

What 2 aspects do siding dwarf and calling on signals display? (2 position)

A
  • normal (extiniguished)
  • proceed (illuminated)
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7
Q

What 5 things do 2 position home signals protect?

A
  • sidings
  • signal boxes
  • stations
  • level crossings
  • junctions
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8
Q

Can a distant signal display stop?

A

No. It is just an advanced warning of the home signal ahead

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9
Q

Is a hand signaller required for a defective distant signal?

A
  • only for proceed aspect
  • hand signaller will:
    • place 2 ATWs on one rail
    • display a stop/red hand signal to stop trains until permission can be given for them to proceed
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10
Q

What is a disc signal described as?

A
  • a red circular target that can be turned to the side
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11
Q

How do you read a 2 position signal when there are multiple signals fitted together?

A

Top to bottom, left to right

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12
Q

What are signals used for?

A
  • control the movement of rail traffic
  • keep trains separated at a safe distance
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13
Q

Where can disc signals and standard dwarf signals take you? (2 position)

A
  • running line to running line
  • running line to siding
  • siding to siding
  • siding to running line
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14
Q

What 3 things can a 3 position signal tell you about the line ahead?

A

If it is:
- damaged
- occupied
- obstructed

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15
Q

How are 3 position signals operated?

A
  • by the signaller
  • track circuitry
  • axle counters
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16
Q

What 4 things do the aspects on a signal tell you?

A

P - points are set/not set
T - track ahead is clear/occupied
S - normal or medium track speed
N - next signal is displaying proceed or stop

17
Q

What is the 1 type of a 3 position signal?

A

Light

18
Q

What are the 4 classes of 3 position signals?

A
  • home
  • dwarf
  • automatic
  • repeating
19
Q

How do you label the lights on a 3 position signal?

A

A = top light
B = bottom light
C = low speed caution, found only on home signals

20
Q

What do 3 position home signals protect?

A
  • station
  • siding
  • signal boxes
  • level crossings
  • junctions
21
Q

What do automatic signals do?

A

Expedite the passage of trains by dividing a long section of track into shorter sections

22
Q

How do you identify an automatic signal?

A

Lights are staggered

23
Q

How do you pass an automatic signal at stop?

A

Under your own authority as per Rule 1 Section 3

24
Q

What movements do 3 position dwarf signals control?

A
  • running line to running line
  • running line to siding
  • siding to siding
  • siding to running line
25
Q

What is the maximum speed you can do past a signal displaying a low speed caution?

A
  • 15 km/h
  • proceed cautiously prepared to stop short of any obstruction as line ahead may be occupied
26
Q

What is the maximum speed you can do at a medium speed aspect?

A
  • max 40 km/h
  • can do 65 km/h or 80 km/h if displayed on the speed indicator on the same signal
27
Q

What does an illuminated letter ‘A’ mean on a 3 position home signal?

A
  • signal is in automatic mode
  • ‘A’ light will only illuminate if signal is at stop
28
Q

What 3 aspects can a 3 position dwarf signal display?

A
  • stop
  • low speed caution
  • clear low speed
29
Q

What is the maximum speed you can do when passing a 3 position dwarf signal displaying a low speed caution or a clear low speed?

A
  • 15 km/h
30
Q

What are banner indicators used for?

A
  • repeat the aspect of the next signal in advance
  • usually used when next signal is has poor sighting distance
31
Q

What are repeating signals used for?

A

Takes you from a 2 position system to a 3 position system

32
Q

What 3 aspects can a repeating signal display?

A
  • warning
  • proceed
  • reduce to medium
33
Q

Can a repeating signal display a stop indication?

A

No - it has no red light

34
Q

How do you treat a repeating signal if it is displaying and irregular aspect?

A
  • at it’s safest position = warning
  • treat the following signal as if it’s at stop until ascertained otherwise

Cert IV in Train Driving (Metro Trains) (7 decks)

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