Single Line Working

Question 1

When would single line working be introduced and what does this allow trains to do?

Answer 1

When one track of a double track uni-directional layout is blocked, SLW allows trains to travel in both directions over the unblocked line.

Question 2

Who arranges SLW?

Answer 2

The pilot and the signaller. The signaller informs the pilot of arrangements.

Question 3

What is SLW a form of?

Answer 3

Degraded working

Question 4

How would you identify the pilot?

Answer 4

Red armlet with word ‘pilot’

Question 5

How would you be made aware of SLW?

Answer 5

On the move or in the WON

Question 6

How does the pilot protect the obstructed line?

Answer 6

With detonators placed 400m beyond the cross over to allow trains to draw forward and set back to access it. He also secures any points for the movement.

Question 7

How many trains can travel over SLW in the normal direction? Which signals must be obeyed for trains travelling in the normal direction?

Answer 7

Normal amount of trains for the signalling system. All signals obeyed as normal

Question 8

How many trains can travel over SLW in the wrong direction? Which signals must be obeyed for trains travelling in the wrong direction?

Answer 8

Only one train over the SLW section at one time. Signals to be disregarded.

Question 9

How are movements back to the proper line controlled for trains travelling in the wrong direction?

Answer 9

By hand signallers unless there is a main aspect controlling movements back to the proper line or if the pilot travels with every train

Question 10

Is a hand signaller still required to control movements back to the proper line in poor visibility?

Answer 10

Yes

Question 11

Can position lights or shunting signals be used to control movements back to the proper line?

Answer 11

Yes but a hand signaller would still be required as these signals are not main aspects.

Question 12

If there is no main aspect or hand signaller to control movements back to the proper line, what must happen?

Answer 12

Pilot must travel with trains in the wrong direction

Question 13

If a pilot travels with the driver, what must they instruct the driver to do at the end of SLW?

Answer 13

Stop and contact the signaller for permission to re-join the proper line when opposite the signal protecting the cross over (TCB) or opposite the home signal controlled by the signal box that controls the cross over (AB).

Question 14

If a train is due to enter SLW in either the right or wrong direction but there is no train to follow them, what must happen?

Answer 14

The pilot must accompany the driver.

Question 15

What serves as your authority to enter SLW?

Answer 15

Possession of the completed RT3193 form and personal authority of the pilot.

Question 16

Who issues the RT3193?

Answer 16

The pilot

Question 17

What is a feature of the RT3193?

Answer 17

Double sided- right/wrong direction

Question 18

What information is included on the RT3193?

Answer 18

Cross overs SLW is taking place between, affected lines, TSRs/ESRs, intermediate signal boxes that are closed, to approach points at caution and check if they are set correctly, to pass points at 15mph if they are unworked not clipped or scotched or if you are the first train, to pass points at 50mph if not the first train to pass, AHBC instructions to pass on authority of green hand signal only, hand signaller locations, level crossing arrangements, speeds, to pass any specific location only if authorised by a hand signal, whether a hand signaller or main aspect controls the cross over.

Question 19

What must you do with your ticket when you reach the end of SLW?

Answer 19

Write ‘cancelled’ on it and return to pilot or fax at depot.

Question 20

In what circumstances would you not receive an RT3193?

Answer 20

REAR or when working to and from a point of obstruction

Question 21

What are your actions when passing a CCTV/OD/RC crossing during SLW?

Answer 21

No attendant- approach at caution, pass if safe
Attendant- cross if green hand signal shown

Question 22

What are your actions when passing an AHBC during SLW?

Answer 22

No attendant & WD controls fitted- maintain speed on WD speed board from board until train on crossing

Under local control (if no WD controls)- only pass if green hand signal shown

Question 23

What are your actions when passing a manually controlled crossing protected by signals?

Answer 23

Cross only if green hand signal shown

Question 24

What are your actions when passing a manually controlled crossing where a hand signal is shown opposite the protecting signal?

Answer 24

Cross if yellow hand signal shown (acting as signal as next aspect unknown)

Question 25

What are your actions when passing a controlled crossing protected by signals where the normal barrier position is closed to road traffic?

Answer 25

No hand signal. Only cross when certain crossing is closed to road traffic.

Question 26

What are your actions when passing a R&G crossing during SLW?

Answer 26

Unless fitted with WD controls, stop short, sound horn and pass when safe

If WD controls, proceed at speed on speed board from board until on crossing.

Question 27

What are your actions when passing a barrow or foot crossing during SLW?

Answer 27

Unless fitted with WD controls, approach at caution and pass when safe.

Question 28

What must you do with the pilot before entering SLW?

Answer 28

Personally identify him, have his personal authority and a completed RT3193 to enter and reach a clear understanding.

Question 29

At locations with a hand signaller, what must you do?

Answer 29

You must stop at all locations with a hand signaller unless a proceed hand signal is shown.

Question 30

What speed can you travel at during SLW in the normal direction?

Answer 30

Line speed

Question 31

What speed can you travel at during SLW in the wrong direction?

Answer 31

Max. 50mph or any lower speeds that apply

Question 32

Which signals can be disregarded when travelling in the wrong direction?

Answer 32

All signals except those protecting cross overs.

Question 33

When travelling through SLW, what must you do as per RT3193?

Answer 33

Follow any instructions on the ticket

Question 34

If you are the first train into the SLW section, what speed can you do over points?

Answer 34

Max.15mph and subsequent trains can travel at max.50mph over points

Question 35

If you are accompanied by the pilot and you are the first train into the SLW section, what must you allow him to do?

Answer 35

Stop and allow him to inform any personnel of SLW or to check points

Question 36

If you are the first train into the SLW section but you are not accompanied by the pilot, what must you do?

Answer 36

Stop to inform any personnel of SLW.

Question 37

If stopping opposite a signal protecting a cross over on a TCB line, what possible hand signals could you receive?

Answer 37

Red or yellow

Question 38

If stopping opposite a home signal controlled by the same signal box as the cross over, what possible hand signals could you receive?

Answer 38

Red or yellow

Question 39

If you are stopping opposite any signal where trains may be required to stop, what possible hand signals could you receive?

Answer 39

Red or yellow

Question 40

If you are stopping at any intermediate signal box unless closed, what possible hand signals could you receive?

Answer 40

Red or yellow

Question 41

If you are passing any unworked points when approaching in the facing direction, what possible hand signals could you receive?

Answer 41

Red or green next to the points at ground level.

Question 42

When might working to and from an obstruction be implemented? Where is SLW introduced within this?

Answer 42

When both lines of a double track layout are blocked by an obstruction, SLW is introduced over one line only

Question 43

Can SLW be introduced on both sides of the obstruction?

Answer 43

Yes but separate pilots will be required and must travel with every train.

Question 44

Is a completed RT3193 required to enter a SLW section when working to and from a point of obstruction? Why?

Answer 44

No because the pilot must accompany every train

Question 45

When working to and from a point of obstruction, does the pilot have to travel with you?

Answer 45

Yes, the pilot must travel with every train.

Question 46

Can SLW be introduced on TCB lines where there is more than one available line? If so, what criteria must be met?

Answer 46

Yes:
1) Must be more than 2 running lines
2) All lines in one direction must be blocked
3) There must be two or more lines in the opposite direction that remain open.

Question 47

Which line should trains travelling in the normal direction travel on when SLW is introduced at a location with more than one available line?

Answer 47

The unobstructed line that is not being used for single line working

Question 48

Which line should trains travelling in the wrong direction travel on when SLW is introduced at a location with more than one available line?

Answer 48

Trains that cannot run in the normal direction due to the blockage must travel over the other available line that is being used for single line working.

Question 49

If the pilot accompanies a train that subsequently fails, what can the driver ask the pilot to do?

Answer 49

To carry out emergency protection.

Question 50

Who’s permission is required before making a movement to return to the same end of the single line that you entered from?

Answer 50

The signaller.

Question 51

If a train fails and the pilot is not on the failed train, what must happen?

Answer 51

The pilot must travel on the assisting train if assistance is to come from the rear and the failed train is going to be withdrawn to the rear to return to the same end of the single line that it entered from.