Points

Question 1

What are the purpose of points?

Answer 1

To divert or transfer a rail vehicle from one track to another

Question 2

Explain the meaning of FACING?

Answer 2

2 options for track directions

Question 3

Explain the meaning of TRAILING?

Answer 3

One of option of track direction

Question 4

What is the purpose of track being set as NORMAL or REVERSE

Answer 4

To identify the directions the points are set for

Question 5

Explain a set of NORMAL points?

Answer 5

Where the switchblade touches the running rail nearest the point plate number

Question 6

Explain a set of REVERSE points?

Answer 6

Where there is a gap between the switchblade and the running rail nearest to the point number plate

Question 7

How can you identify a direction of travel?

Answer 7

Follow the running rail where the gap is

Question 8

Describe a POINT FAILURE?

Answer 8

Where the points are out of correspondence and cannot be detected by CCC if they are set in Normal or Reverse

Question 9

Where do you find the following points?

1) HONLYPS
2) WILLIAMS
3) CLAMPLOCK
4) SWINGNOSE

Answer 9

1) Depot
2) Depot
3) Depot and Mainline
4) Mainline (heavily used areas)

Question 10

What is the function of HONLYPs?

Answer 10

They allow the train to pass the wrong direction without damage to the wheel or points

Question 11

1) What happens after a train passes a set of HONLYPs

2) what should you never do on this set points?

Answer 11

1) switchblade closes, returning to its original position

2) Never reverse over set a of trailing point

Question 12

1) Where are WILLIAMS points found?

2) How do they function?

Answer 12

1) They are only found in the depot

2) points must be scotched and clipped before movement can take place. Points are moved manually with a spring loaded handle

Question 13

1. How do CLAMPLOCKS function?
2. What happens with the following:

A) FACING (not set)
B) Trailing (not set)

Answer 13

Allow trains to pass in the wrong direction without damage to the wheel or points, but lock into place once swung.

They will not move if the points are not in the correct position

IF FACING (NOT SET), wrong direction and collision

IF TRAILING (NOT SET), derailment

Question 14

Where are CLAMPLOCKS found?

Answer 14

Mainline and Depot

BED - TVA 1, 2, 3
Between Wash siding and NTVA
All Saints siding and NTVA

Question 15

What are the function of SWINGNOSE? And where can you find them?

Answer 15

They allow the trains have a smooth ride, in heavily used areas between WIQ and HEQ

Question 16

What are SCISSORS/CROSSOVER points and how do they function?

Answer 16

They are made of CLAMPLOCKS points and they allow trains to be routed in different directions

Question 17

Where can you find Scissor/Crossover points?

Answer 17

Greenwich
Poplar
Lewisham
Woolwich Arsenal
Custom House and Prince Regent

Question 18

When crossing another set of tracks, what should (scissor/crossover)

1st set of points be?
2nd set of points be?

Answer 18

1) FACING REVERSE
2) TRAILING REVERSE

Question 19

What are TRAP/RUN OFF points? What are their purpose?

Answer 19

Made of CLAMPLOCKS

To protect the mainline/TVA from runaway depot trains

Question 20

Where are TRAP/RUN OFF points founds?
What happens if they are set in NORMAL?
How should they be set to go to the MAINLINE?

Answer 20

Only in the depot

The train will DERAIL

They must be set to FACING REVERSE

Question 21

Specify where you can find TRAP/RUN OFF points?

What do they do at each location?

Answer 21

At BED at TVA 1,2,3
And here they protect the mainline by stopping the train passing the TVA

At Poplar - between the Wash sidings and NTVA and All Saints Sidings and NTVA
Here the protect the TVA

Question 22

Where you can find DEPOT SIGNALS?

Answer 22

1. At the end of berthing roads
2. At intermediary points in the depots
   3, on TVA facing towards the depot

Question 23

Why should you have enough space near a DEPOT SIGNAL?

Answer 23

1) pre-service checks (BRAKE TESTS)

2) Uncoupling

Question 24

What can DOT MATRIX signal show?

What do the things they show refer to?

Answer 24

1) They can show letters and numbers
2) They can refer to the NEXT SECTION TRACK, next SIGNAL NUMBER, the BERTHING ROAD routed to

Question 25

What do PPIs do?

And what are they governed by?

Answer 25

They identify the status of the points

They are govern by the plate point number which can govern more than one set of points

Question 26

Where you can find PPIs and depot signal in the same place?

Answer 26

Found at POD

AT SIGNAL 424 STVA
AT SIGNAL 429 NTVA

Question 27

Where PPIs and DEPOT SIGNALs are in the same place:

1) what indications will you see to go the depot?

2) what indications will you see to go the mainline?

Answer 27

1) green depot signal and red bar in PPI

2) no aspect for depot signal and arrow for PPI