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Traineeship Study > Signals - Identifying and Dealing with Signal Irregularities > Flashcards

Signals - Identifying and Dealing with Signal Irregularities Flashcards

1
Q

What should Irregularly displayed (Defective) Signals always be regarded as?

A

At the safest position (STOP)

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2
Q

If detained at a Fixed Signal how often must a driver contact the Signaller?

A

Every 5 minutes

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3
Q

What are the 6 reasons why a train can be detained at a Fixed Signal?

A
  • Defective equipment (signals,points)
  • Congestion
  • Trespassers
  • Ahead of timetable
  • Train faults
  • Sick passengers
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4
Q

What is the process for a driver if detained at a Fixed Signal?

A
  1. Sound a long whistle
  2. Contact the Signaller/Area Controller/Train Controller using:
    - DTRS
    - Work Mobile Phone
    - Signal Post Telephone
    - Physically at Signal Box
  3. Provide them with:
    - Train Number
    - Signal Post Number
    - Position of Train
  4. Signaller will provide driver with:
    - Reason for Delay
    - Duration of Delay
    - Blocking Facilities if applicable
    (Contact Train Controller if you can’t reach Signaller)
  5. PA Announcement
  6. Train Controller must be informed if Driver isn’t satisfied with reason for delay
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5
Q

What are identified as Signal Irregularities?

A
  • The absence of a Signal Aspect at a place it is normally shown
  • A signal imperfectly displayed
  • A signal that is flickering
  • A disc signal not turned correctly
  • A white light where there should be a coloured light
  • Where there are 2 signal aspects where there should only be 1
  • Conflicting Co-Acting aspects
  • Signal reverting to STOP prior to the train passing the signal
  • Any other displaying aspects not in the 1994 Book of Rules
  • Cycling through different signal aspects
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6
Q

How should drivers treat all imperfectly displayed signals?

A

As a STOP aspect

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7
Q

Why may signals that are operated by mechanical means potentially display halfway position?

A

Extreme weather conditions

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8
Q

What to do at Home, Disc and Dwarf Signals which have irregularities?

A
  1. Attempt to stop prior
  2. Advise Controlling Signaller of circumstances (including signal number and fault)
  3. Receive the correct Authority to pass the defective signal
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9
Q

What to do at Automatic Signals which have irregularities?

A
  1. Attempt to stop prior
  2. Advise Train Control of circumstances (including signal number and fault)
  3. Rule 1 Section 3
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10
Q

Is a CAN Notice an authority to pass a signal at Stop?

A

No

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11
Q

What should a driver do if a Home Signal is Defective at the Proceed Position?

A
  1. Obtain correct authority to pass defective signal from Controlling Signaller
  2. Proceed with Extreme Caution to the next Fixed Signal
  3. Make PA Annocement
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12
Q

What should a Hand Signaller do if a Home Signal is Defective at the Proceed Position?

A
  1. Obscure the light of the signal
  2. Place 2 ATW’s 10 metres apart at a sufficient distance before the signal
  3. Hold RED hand signal to stop any train
  4. Inform driver of circumstances
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13
Q

What should a Hand Signaller do if a Dwarf or Disc Signal is Defective at the Proceed Position?

A
  1. Obscure the light of the signal
  2. Hold RED hand signal to stop any train
  3. Inform driver of circumstances
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14
Q

What should a driver do if a Dwarf or Disc Signal is Defective at the Proceed Position?

A
  1. Follow the Hand Signals
  2. Obtain the correct Authority to pass the signal
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15
Q

What should a Hand Signaller do if a Automatic Signal is Defective at the Proceed Position?

A
  1. Obscure the light of the signal
  2. Place 2 ATW’s 10 metres apart at a sufficient distance before the signal
  3. Hold RED hand signal to stop any train
  4. Inform driver of circumstances
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16
Q

What should a Driver do if a Automatic Signal is Defective at the Proceed Position?

A
  1. PA Announcement
  2. Comply with Rule 1 Section 3
  3. Proceed with Extreme Caution to next Fixed Signal
17
Q

If a driver passes a Wrong Routed Signal what are the 2 options?

A
  • Setting back behind the signal with the correct authority
  • Continuing on the wrong route to terminate at an available location
18
Q

If a driver is Wrong Routed onto an unwired track, they must?

A
  • Apply Emergency Brakes to try and stop short of the end of overheads
  • Lower the Pantograph to prevent damage to Pantograph or Overhead
19
Q

What must a driver do if required to pass a signal at Stop that is protecting a Tramway Level Crossing?

A

Implement “Coasting over a Tramway Square” procedure

(Signaller will inform the driver of this)

20
Q

What is TOTS?

A

Train Overtime in the Section

21
Q

What must the Train Controller do when TOTS is implemented in the Section?

A
  • Prevent any train movements through the area
  • Inform station and signalling staff at either end of the section
  • Locate the train through any means
  • Keep trying to communicate with the train driver
22
Q

If a Co-Acting signal is showing conflicting or irregular aspects what should a driver do?

A

Consider it to be at its safest aspect (STOP)

23
Q

What will Co-Acting aspects have?

A
  • The same aspects
  • The same signal number
  • One signal may have a P at the end of the number
24
Q

What should a driver do if they see an Irregular Aspect Sequence?

A
  • STOP the train (using Emergency Brakes if necessary
  • Report it to Train Control
25
Q

What 2 reasons may make an Irregular Aspect Sequence occur?

A
  • Signal Technicians may have commenced work on the Signal in advance
  • The Signal in advance may be defective

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