Signals Flashcards by Joshua Blake

What is risk triggered commentary?

Its verbal acknowledgment of the potential risk.

It is mandatory when:
- All medium and normal speed warnings

while preforming departure sequence

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What are the 4 steps of Risk triggered commentary ?

1) Risk Recognition
2) Risk Identification
3) Risk countermeasure (perform the action)
4) Reaffirm the Risk

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What does PTSN stand for ?

Points
Track ahead
Speed
Next signal

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What are the Class Types of signals?

Disc
Dwarf
Distant
Home
Calling on

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Name the Signal types

Light type

Disc type

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What do signals protect?

Stations
Signal boxes
Sidings
Level crossings ( Tram way crossings)
Junctions

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What is a Distant signal?

What aspects can it show?

A advanced warning of the upcoming home signal.

Caution or Proceed

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What is the Speed in a Siding?

Maximum of 15km.

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What are the colours for Two Position Dawrf signal?

Stop = Red/Blue/Purple

Proceed= Green/yellow

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True or False:
Are all 3 Position signals a Light Type signal?

True

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What do 3 position home signals protect?

Stations
Sidings
Signal box
Level crossings
Junctions

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Will a Marker Light colour ever change?

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What do Home signals protect?

Points

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What do Automatic signals protect?

Its own Track circuit

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What must happen if you lose sight of a hand signal?

Must bring the Train to STOP

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What does a GREEN Flag represent?

To proceed
Two position Aspects are active

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What is the Maximum speed when travelling from running line to running line?

40 km/h is the maximum speed unless otherwise specified

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What does a “Calling On” enable?

It allows trains to enter a occupied road when the section is track circuited.

How do you differentiate an Automatic signal from a home signal?

The two lights are staggered.

What is the Primary purpose for Automatic Signals?

To expedite the passage of trains by dividing long sections into shorter sections.

What are banner lights ?

Indication to the driver of the upcoming signal when they have a obstructed view

What are Banner Lights not?

NOT a fixed Signal

NOT considered as a signal in advance

Name the 3 Position aspects

STOP : red over red
Normal speed warning: yellow over red
CLEAR NORMAL SPEED: green over red
REDUCE TO MEDIUM: yellow over green
MEDIUM SPEED WARNING: red over yellow
Clear medium speed: red over green
Low speed caution : red over red over yellow

What signals are Permissive?

Automatic (can only pass with Rule 1 section 3)

What signals are Absolute?

Home Dwarf Disc

Purpose of Automatic signal?

To expedite the running of trains by breaking up the block section into track sections.

When ATWS explode what does the driver have to do?

Reduce speed Sound long whistle Press M.A.D button Look out for inner hand signaller

Where are the Inner Suburban area?

Richmond Jolimont North Melbourne East & West bypass

Where is the Suburban Area defined as ?

Dandenong Broadmeadows St Albans Laverton via westona line Altona junction via East and West Lines

Where is the Country Area defined as?

The DOWN side of: Altona junction St Albans Laverton Dandenong

What are the 7 Types of Route Indicators?

Painted Arrow Illuminated Arrows Signal Aspects Feather Type Dual gauge route indicator Theatre type Illuminated Letters

Are Line indicators route indicators?

No!!!

Where must an outer flag signaller stand in a suburban Area?

1200m from point of work Or 3 x signals in the rear of the works if within the 1200m

Where must a Inner hand signaller stand in a Suburban Area?

200m from the point of works

Where does the Outer and Inner hand signaller stand in the Inner suburban area?

Outer Flag: 2x signals from rear of the works Inner Flag : 100m from point of work

In the country Area what must the Outer Hand Signaller do?

-Place 3 ATWS 10 meters apart on one line of the rail - Be 2000m to 4000m from point of work - Display yellow Hand signal ( flag)

When will Temporary speed restrictions be put in place ?

-Track Faults -Broken rails -Signalling and circuitry issues - Any other circumstances requiring reduced speed.

Where is the Station limits ? And who controls them in that area ?

Station limits are the portion between opposing Home arrivals signals. The signaller controls the trains movement.

What is a Single Line? Where is it controlled?

Portion of two crossing loops May be controlled LOCALLY or REMOTELY

What is a Track Section?

Section of Track between 2 Fixed Signals

On a ABS system what exceptions can you pass a home signal at the STOP position.

Defective Single line work Track circuited

What are the Two types of ABS signalling

Single line Double line

ABS defined station Limits are ?

Arriving HOME to FIRST auto ins advance of the departing home signal