RS521 Flashcards
Signals, handsignals, indicators and signs
Signal type identification
Describe a controlled signal identification plate?
Square / rectangle
Black background
White lettering
Signal type identification
Describe an automatic signal identification plate?
White Rectangle with a black horizontal band
Signal type identification
Describe a semi automatic signal identification plate?
White rectangle with a black band and the word “SEMI” written
Signal type identification
Describe a distant signal identification plate?
Black square or rectangle with a white triangle of letter “ R”
Signal type identification
Describe a co acting signal identification plate?
Black square or rectangle with “ CA” written
Signal type identification
Describe a 3 state banner repeating signal identification plate?
Black rectangle
Two white half moons and letters “BR”
Describe 3 aspect signalling - normal sequence?
Green aspect- proceed next signal displaying proceed aspect
Yellow aspect- caution. Proceed. Bd prepared to stop at the next signal
Red aspect- danger. Stop
Describe a 4 aspect signalling- normal sequence
Green aspect- proceed next signal displaying proceed aspect
Double yellow aspect- preliminary caution. Proceed but bd prepared to find the next signal displaying a single yellow aspect.
Single Yellow aspect- caution. Proceed. Be prepared to stop at the next signal
Red aspect- danger. Stop
Junction indicator
What is the purpose of a junction indicator?
When lit show that a train is being signalled to a route to the left or right of the straight route
Route indicator
What is the purpose of a route indicator?
Shows letter or number to show the route onto which the movement is being signalled
Flashing yellow aspects
On a 3 aspect signalling describe sequence with a flashing yellow
Green
Single flashing yellow
Steady single yellow with a junction indicator
Red
Flashing yellow aspects
On a 4 aspect signalling describe sequence with a flashing yellow
Green Double flashing yellow Single flashing yellow Single steady yellow with junction indicator Red
Position light signals are normally located at ground level and will be unlit if running on main aspect. If 2 red lights are shown what does it indicate?
Stop
Position light signals are normally located at ground level and will be unlit if running on main aspect.
If 2 yellow lights are lit horizontally, what does it indicate?
Can proceed if movement is being made towards a shunt neck or siding.
Is a stop signal for movements being made onto running lines
Work site marker boards
If it has 2 red flashing lights what does this indicate?
Who will give you authority to pass WSMB?
Entrance to work site
The authority of the Engineering supervisor is needed to pass it
Work site marker boards
If it has 2 yellow flashing lights what does this indicate?
Who will give you authority to pass WSMB?
Indicates exit from a work site.
Authority from a PICOP is needed to pass it
Right away indicator
If RA is illuminated what does it mean to the driver?
Station duties complete
Train is secure
It is safe to proceed
Position light signals associated with a main aspect.
If the main aspect is aspect is displaying a red aspect but position light signal shows 2 lights af 45° what does it authorise the driver to do?
To proceed at caution towards the next train, signal or buffer stop and be prepared to stop short of any obstruction.
Distant signal
Is a yellow arm with a fishtail af the end. It has a black Chevron at the end.
What does it mean when the arm is horizontal?
What does it mean when raised or lowered by 45°?
What 2 lights can it display?
At horizontal position will show a yellow light. Means caution, be prepared to stop at the next signal.
At raised or lowered positions with green light, means all associated stop signals from the same single box are clear.
Can show a yellow or green light.
Semaphore signal. The Stop signal A red arm with a white vertical band. When horizontal what does it mean? When raised or lowered what does it mean? What 2 lights can a stop signal show?
When horizontal will show a red light. Means stop.
When raised or lowered will show a green light. Means proceed.
Red or green light. Green light nearest to the mast.
Name 3 types of route indication?
Stepping- normal method on running lines ( highest signal applies to main route, read left to right)
Stacking - normal for shunting. ( read top to bottom and left to right)
A route indicator- displays a letter or number to show the route which the movement is being signalled.
Limit of shunt boards
Describe the different types?
Either
Instructions on an illuminated sign. Either red writing on either a white rectangle or circle
Or
2 red lights horizontally displayed (GPL)
If passed is a SPAD
Stop boards
Describe stop board?
When can you proceed beyond the stop board?
White vertical rectangle
Red circle at top
Black letters saying STOP, may also show other instructions and be illuminated.
If either the instructions on the stop board have been carried out or you have been given permission to do so by the authorised person
If passed without authority it is a SPAD
Possession limit board
Describe a PLB?
Where is it found?
A red double sided octagonal board and is visible on the line in both directions.
It has a steady or flashing red light at top
It had the word STOP written in the centre of the board in white capitals
A PLB identifies the boundary of a possession. They may also be used as part of the protection for a line blockage.
SPAD indicator
Describe appearance, indication and meaning?
It has a 3 aspect signal head fitted on a blue back plate.
Normally positioned 50metres beyond certain signals.
Normally unlit. If signal is passed at danger the indicator will be lit and display a flashing red light in the top and bottom aspect with a steady red light with the word STOP in the centre aspect.
Banner repeaters
Describe a banner repeater?
Describe a black bar in a horizontal position?
Describe a black bar in a 45°position?
Describe a black bar in a 45° position and green background?
Describe a black bar with a fish tail end?
Provided on approach to certain signals which have restricted view.
White circle with a black bar.
At horizontal position means the signal to which it applies is at danger.
At 45° means the signal to which it applies is displaying a proceed aspect.
At 45° with a green background indicates a that the signal to which it applies is showing a green aspect
A black bar with a fish tail end relates to a distant signal.
At the horizontal position means distant signal to which it applies is at caution.
At 45° position means the distant signal is clear.
Off indicator
Where is it provided?
If lit what does it mean?
On platforms for guard or platform staff
When the word OFF appears the signal to which it applies is showing a proceed aspect
Preliminary route indicator
Why is it provided?
What does it look like?
Describe the different positions the PRK can display?
Is provided where it is necessary for the driver to receive advance information about the route. It displays an arrow which is pointing in the same direction as the junction indicator. Arrow pointing:- 45° raised to the left = position 1 90° to the left = position 2 45° lowered to the left = position 3 45° raised to the right = position 4 90 ° to the right = position 5 45° lowered to the right = position 6
AWS cancelling indicator sign
Why are they needed?
Describe their appearance?
Describe their location?
In some locations where the AWS magnet is not suppressed a cancelling indicator is provided to tell the driver that the AWS warning indication does not apply to trains travelling in that direction.
Where the AWS magnet is permanently installed the AWS indicator is a ST Andrew’s flag
Where the AWS magnet is temporary installed the AWS indicator is a yellow square with a black diagonal cross (X)
The cancelling indicators are normally positioned 180 metres after passing over the AWS magnet.
AWS gap indicator signs
Describe why they are provided and their appearance?
Where AWS is not provided at a station on a line equipped with AWS.
2 types of sign, the start of the AWS gap and the end of the AWS gap.
Start of AWS gap = white circle with AWS written in black capitals inside and a red diagonal cross (X)
End of AWS gap = white square with AWS written in black capitals.
AWS gap signage on a bi directional line
Describe what signs are provided and what they look like?
Provided where AWS is not provided in the opposite direction on a bi directional line.
Start of the relevant section of line concerned = white diamond with AWS written in black capitals and a red cross (X) through it
End of the section, normal arrangements resume = white diamond with AWS written in black capitals
Permissible speed indicators
Describe appearance?
For mph =White circle with a red perimeter
Black number
For km/h = black circle with a red perimeter and a white number
Warning indicator
Describe appearance?
White upside down triangle with a yellow perimeter. Black number indicates mph.
Differential permissible speed indicator
Describe appearance?
For mph = white circle with a red perimeter. Two Black numbers.
Bottom number is higher and applies to passenger trains, parcel/postal trains and light locos.
Top number is for all other trains.
Temporary speed restriction signs Warning board Describe appearance? Reason to use? Location?
A yellow square with a black number on top of a yellow rectangle with 2 white discs
A warning board is placed on the approach to a temporary speed restriction ahead.an AWS magnet is provided on the approach to the warning board (180metres)
Not provided in AWS gap areas.
Temporary speed restrictions signs
Speed indicator
Describe appearance
Reason for use?
A yellow square with a black number inside
A speed indicator shows the start of the speed restriction and the permitted speed over the restriction
Temporary speed restriction signs
Termination indicator
Describe appearance?
Reason for use?
Yellow square with a black capital T inside
The termination indicator shows the enf of the speed restriction
Temporary speed restriction signs
SPATE indicator
Describe appearance?
Reason for use?
A yellow square with a black diagonal line going left to right and bottom to top.
The SPATE indicator shows the speed restriction haz been withdrawn or will not be Imposed.
SPATE = speed previously advised terminated early
Temporary speed restriction signs
Repeating warning board
Describe appearance?
Reason for use?
A yellow square with a black capital R on top of a yellow rectangle with 2 white discs on top of a yellow square with a black number (speed).
A repeating warning board is placed on the end of a platform or a siding or dead end platform to remind remind the driver there is a temporary speed restriction ahead.
Emergency indicator
Describe appearance?
Reason for use?
Yellow vertical rectangle with black Chevrons. White flashing lights in top two black Chevrons.
When an emergency speed restriction is to be imposed an emergency indicator will also be used. The indicator has flashing white lights which will be working at all times.
An AWS magnet is provided on the approach to the emergency indicator.
There will be no AWS in AWS gap areas.
Telephone signs
Signal post telephone
Describe appearance?
Purpose?
White vertical rectangle with black diagonal lines going left to right bottom to top.
If there is a number inside the box this means the maximum number of minutes that can elapse before the driver contacts the signaller.
They are telephones associated with signals
Telephones
Line side telephone
Describe appearance?
White square with a black cross (X)
Telephone signs
Limited clearance telephones
Describe different types and their meaning?
Square with chequered red and white squares with “ warning” and “limited clearance” written in red. Means you can use as it is in a position of safety in relation to the adjacent running line and protection is provided by the presence of your train
Either a SPT or lineside telephone with a yellow roundel or a white or yellow diamond with a black cross (X)
Means dont normally use. Only leave cab in an emergency or if the driver on another line or competent person has told you that the signaller has blocked the line(s) adjacent to the telephone and it is safe to get down from your cab to use the telephone.
Telephone signs
White diamond sign
Purpose?
The sign means that a telephone is not provided but the presence of the train is indicated to the signaller. If a telephone number is provided below a driver may only leave cab to use a lineside telephone in an emergency or if told the adjacent line(s) have been blocked
Low adhesion signs
Entrance to a low adhesion area
Describe appearance?
White triangle with yellow perimeter. A black leaf inside the triangle
Low adhesion signs
Exit from a low adhesion area
Describe appearance?
Yellow square with a black perimeter. A black leaf inside square and a red diagonal cross (X)
Sandite markers
Describe appearance?
Purpose?
Three types
1) yellow vertical rectangle with three black diagonal marks going left to right and bottom to top. Gives advance warning of sandite application site.
2) yellow vertical rectangle with 2 black diagonal marks going left to right and bottom to top. Means to start applying sandite.
3) yellow vertical rectangle with one black diagonal mark going left to right and bottom to top. Means to STOP sandite.
Countdown markers
Describe appearance?
Purpose?
3 types
1) White vertical rectangle with 3 red diagonal marks going left to right and bottom to top. Informs driver that there is 300 metres to the signal.
2) White vertical rectangle with 2 red diagonal marks going left to right and bottom to top. Informs driver that there is 200 metres to the signal.
3) White vertical rectangle with 1 red diagonal mark going left to right and bottom to top. Informs driver that there is 100 metres to the signal.
Limited clearance sign
Meaning?
This sign means there is no position of safety on this side of the railway for the length of the structure. It is not safe to enter or stand at that location when a train is passing.
No refugees warning sign
Purpose?
This sign means that there is no position of safety on this side of the railway for the length of the structure however there are positions of safety on the opposite side of the railway line
Red handsignal
Meaning?
A red flag or red light means Stop.
Yellow handsignal
Meaning?
A yellow flag or light is used to give authority to pass a signal at danger.
Green handsignal
Meanjng?
A green flag or light is used to give authority to pass over a level crossing
Lookout handsignal
Describe appearance?
Purpose?
Blue and white chequered flag
Is used between lookouts to inform of an approaching train. Drivers can ignore this handsignal.
