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Traineeship Study > Signals - 2 Positon Signals > Flashcards

Signals - 2 Positon Signals Flashcards

1
Q

What aspects do Home, Dwarf and Disc signals display?

A
  • Stop
  • Proceed
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2
Q

What aspects do Distant signals display?

A
  • Caution
  • Proceed
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3
Q

What aspects do Siding Dwarf signals display?

A
  • Normal
  • Proceed
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4
Q

What are the 2 types of Two Position Signals?

A
  • Light type
  • Disc type
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5
Q

What are the 5 different class’ of Two Position Signals?

A
  • Disc
  • Dwarf
  • Distant
  • Home
  • Calling On
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6
Q

Is a Disc signal both a Type and Class?

A

Yes

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7
Q

Where are Two Position Home Signals fixed at and protect?

A
  • Stations
  • Sidings
  • Signal Boxes
  • Level Crossings
  • Junctions
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8
Q

What Type are all Two Position Home Signals on the Metro Network?

A

Light Type

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9
Q

What do Home Signals at the Stop position indicate?

A

Points - Unknown
Track - May be occupied
Speed - Stop
Next Aspect - Unknown

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10
Q

What do Home Signals at the Proceed position indicate?

A

Points - Set
Track - Clear
Speed - Track Speed
Next Aspect - Unknown

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11
Q

What is a Distant Signal?

A

Used as an advanced warning of the ahead Home Signals

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12
Q

What aspects can a Distant Signal display?

A
  • Caution
  • Proceed
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13
Q

Distant Signals can be placed to Caution when?

A
  • Immediately when a train passes
  • An obstruction on the line
  • There is danger on the line
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14
Q

What prevents a distant signal being at a proceed when a Home Signal at that location is at Stop?

A

Mechanical Interlocking

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15
Q

What must be done when receiving a Calling On Signal?

A

Drive at Reduced Speed Cautiously because the track may be occupied

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16
Q

Disc Signals are used to control train movements from?

A
  • Running line to Running line
  • Running line to siding
  • Siding to Siding
  • Siding to Running line
17
Q

What 2 aspects do Disc Signals display?

A
  • Stop
  • Proceed
18
Q

What is the maximum speed in Sidings?

A

15km

19
Q

What is the maximum speed using Disc Signals from Running line to Running line?

A

40km unless specified otherwise

20
Q

Two Position Dwarf Signals are used to control train movements from?

A
  • Running line to Running line
  • Running line to Siding
  • Siding to Siding
  • Siding to Running line
21
Q

What are the 2 types of Dwarf Signals?

A
  • Standard Two Position Dwarf Signal
  • Siding Dwarf Signal (fitted on the same post as a Home Signal)
22
Q

What does a Siding Dwarf Signal display for Proceed?

A

Yellow aspect

23
Q

What does a Siding Dwarf Signal display for Normal?

A

Extinguished

24
Q

When multiple disc signals are fitted to the same post how do you read them?

A

Top to Bottom then Left to Right

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