Two Position Signals

Question 1

Answer 1

Question 2

What Aspect colours mean on three signal. Yellow red green

Answer 2

Question 3

Can you self authorise to pass a automatic signal at stop? If so under what authority?

Answer 3

Yes and rule 1 section 3

Question 4

What does type mean in regards to signals?

Answer 4

Types of signals means identifying the physical construction of the signal. Two position has light and disk. ( how it looks, bright light, target that moves.)

Question 5

What does class mean in regards to two position signals? ( 7 types)

Answer 5

Means different types( abilities). Two position signals have 7 types
1. Disc
2. Dwarf (alone)
3. Dwarf (sidings)
4.home
5. Calling on
6.distant

Question 6

Two position home signals are fixed at and protect? (5 things)

Answer 6

Stations
Signal boxes
Sidings
Level crossings
Junctions
All two position home signals in metro network are light type. The home signal can show red light for stop or green light for proceed.

Question 7

Home signal at stop and proceed. Ptsn for both

Answer 7

Question 8

What is a distant siginal

Answer 8

Are used as an advanced warning of the home signals. It displays
Caution/yellow (one of next two home signals could be red) and proceed / green ( next two lights will be green). The only distant siginal in metro is on the up approach to Frankston from Long Island junction.

Question 9

What is a “calling on “ signal attached to ? And what is if for

Answer 9

It is attached to a two position home signal. It’s used for allowing a train to enter an occupied railroad when the track section is circulated. It only applies to the same track as the home signal above/ it’s attached to

Question 10

A disk signal can be a type and class. What two aspects do they display? And where are disk signals used to control train movements? Same as dwarf

Answer 10

Stop/ red
Proceed / green

Question 11

Two position signals operate by showing one of two aspects. What does home, dwarf, and disk signal display?

Answer 11

Stop
Proceed

Question 12

Two position signals operate by showing one of two aspects. What do distant signals display?

Answer 12

Caution
Proceed

Question 13

Two position. Siding dwarf and call on signals display

Answer 13

Normal
Proceed

Question 14

Common purpose

Question 15

Disk signals are used to control train movements from? 4 answers

Answer 15

Running line to line
Running line to siding
Siding to siding
Siding to running line

Question 16

Disk signal at stop position. Ptsn

Answer 16

Red disk by day. Red light by night. Stop also called danger

Question 17

Disc signal at proceed position. Ptsn

Answer 17

Turned to the side by day. Green light by night.

Question 18

Siding locations at metro are to be regarded as having a max speed of?

Answer 18

15km/h

Question 19

Max speed for running line to running line?

Answer 19

40kmh unless other wise specified. ( running line to line would be regarded as a max speed) points, crossing over until train pass points.

Question 20

Two position dwarf signal are used to control train movements from? 4 things. Same as disc

Answer 20

Question 21

A dwarf light signal can display what colours for stop? 3 colours. And what colour for proceed?

Answer 21

Red
Blue
Purple for stop
And
Green for proceed

Question 22

What colour is the light on a dwarf siding ( fitted on 2 position home signal with a sign indicating siding) for proceed?

Answer 22

Yellow for proceed. Also The light will be extinguished when in normal position .
There must be a board with a sign that have sidings written on it. When you see dwarf signal on the same post a home signal it must say sidings and it is for shunting movements into sidings only

Question 23

Light type dwarf signal at stop. Ptsn

Answer 23

The two position light type dwarf display two aspects. Stop and proceed

Question 24

Light type dwarf signal at proceed. Ptsn

Answer 24

Question 25

Is there a defined speed for a two position dwarf signal at proceed?

Answer 25

No. The driver must operate the train in a manner that will allow them to stop short of any obstruction on the track.

Question 26

Light type sidings dwarf. PTSn at normal aspect ( no yellow, just blank/black empty) and at proceed ( indicated by yellow light)

Answer 26

Sidings dwarf signal only applies for movements to the siding and not to the same line as the home signal directly above or beside it

Question 27

There can be more than one Two position signals of the same class on the one signal post. Two position signals, whether Home, Dwarf or Discs can be located on the same signal post. Each signal will take you to a specific location. It is important for the driver to understand where each signal goes to avoid wrong routing. Each signal has its intended location indicated on the relevant signal diagram. How are they read?

Answer 27

When multiple signals are fitted to the same post the signals are to be read: • Top to Bottom then Left to Right. Any time that two signals on the same post are displaying Proceed at the same time, it must be treated as an irregular signal aspect and the Driver is to treat both signals as at their safest aspect.