Shunting And Shunting Signals Flashcards
What do position lights control?
Position lights control the exit from a stabling siding back into the platform.
What does a yellow aspect on a position light indicate?
A yellow aspect means you should stop only if you wish to go on to the mainline.
What should you be aware of when passing a yellow aspect?
You must be aware of potential vehicles ahead and obey the aspect of any subsequent signal.
What must you do if passing a position light displaying yellow/white or yellow/yellow?
You must be prepared to stop short of any vehicle, obstruction, or signal that you encounter.
What types of semaphore shunting signals exist?
Semaphore shunting signals may be a disc type with a white disc and red bar, or a miniature semaphore arm.
How are shunting discs read?
Shunting discs are read ‘top to bottom-left to right.’
What must be done if a fixed signal reverts to a danger aspect?
The movement must be brought to a stand immediately and the appropriate person informed.
What is required for a wrong direction movement during a shunt?
The signaller’s permission must be ascertained to carry out a wrong direction movement.
What might some places have to prevent trains from stopping foul of another line?
Some places may have a sign to represent that the rear is clear of the risk.
What lights must be on during shunting in a yard or siding?
Marker lights must be on the front and taillights at the back. No headlight should be lit.
What lights are required if movement is needed on a running line?
Headlights need to be lit for that portion of the movement in addition to the marker and taillights.
What lighting is required for a shunting loco?
One red and one white light lit at either end.
Do lights need to be changed when shunting in the wrong direction?
Lights do not need to be changed unless exceeding 400m.
What is the general speed limit in yards, depots, and sidings?
The speed limit is generally 5mph.
What is the speed limit in washers, fuelling roads, wheel lathes, and sheds?
The speed limit is 3mph.
What must be ensured when shunting beyond a limit of shunt signal or indicator?
No part of the movement may pass a limit of shunt signal or indicator unless the signaller has given permission.
What must not be allowed when shunting beyond a home signal?
A wrong-direction shunting movement must not go beyond a home signal unless the signaller has given permission.
What conditions must be met for a movement on a falling gradient towards the next signal box?
The automatic brake must be working throughout the train, or the locomotive must be at the end nearer to the signal box.
What steps must be taken before allowing a movement to enter a shed or building?
Stop the movement at the entrance, check it is safe to proceed, and sound the horn as a warning before restarting, unless otherwise authorised.
What must you understand with the signaller before operating a ground-frame?
You must reach a clear understanding about the movement required and whether the train will be shut in the siding.
What must you confirm to the signaller if you shut the train in the siding?
You must confirm that the train is clear of the running line before restoring the ground frame to normal.
What must be ensured when attaching to or detaching from a passenger or postal train?
You must make sure the automatic brake is in use.
What is the first step when attaching a traction unit to a train or vehicles?
Always stop the traction unit 2 metres from the vehicle.
What should you do after stopping the traction unit 2 metres from the vehicle?
Stop again at any distance set out in the instructions for the class of traction unit involved.
What should you do if the movement is being controlled by a shunter?
Move forward only when authorised by the shunter.
What must you ensure before detaching a dead traction unit from a train?
You must make sure it is properly secured.
When can you uncouple a traction unit from another traction unit on a running line?
You must not uncouple except at a signal box, at a signal, or on a platform line.
What must you do before uncoupling traction units at a location where this does not happen routinely?
You must tell the signaller what movements need to be made.
What must you do before authorising a movement over points worked from a signal box?
Get the signaller’s permission either verbally or by a hand signal.
Daylight: Arm raised above the head. Darkness: White light twisted quickly.
When is the signaller’s permission not needed?
You do not need the signaller’s permission if:
1. The signaller has cleared a signal for movement.
2. The movement will pass a shunting or PL with a yellow ‘stop’ indication, and the points are set for a route to which the signal does not apply when cleared.
How do you indicate to the signaller that a movement is clear of points?
You must give one short blast of the horn.
What must you ensure when leaving vehicles in a safe position?
Vehicles must not be left on a running line, not fouling any other line, clear of any points which may need to be moved, and left within the protection of any trap points, derailers or scotch blocks.
What must be ensured for safe passage at fouling points?
There must be enough room at fouling points for anyone to pass safely between the vehicles which are to be left and any movement on the adjoining line or siding.
How must traction units be secured?
Traction units must be properly secured to prevent them from moving.
What must be done when leaving vehicles on a dead-end line with a red or white light?
A light of the same colour must be placed on the end of the vehicles which faces approaching movements.
What is required before making a propelling movement outside a worksite?
Details must be published in the WONs or Engineering Notices.
What must be agreed upon regarding unloading vehicles during engineering?
A clear understanding with the PIC regarding control of movements must be established.
What aspects should be clarified with the PIC for unloading vehicles?
- When the PIC will take over control of movements
- How the movement will be controlled
- When control will be handed back to the driver or shunter.
What must you do during the movement of vehicles?
Carry out the instructions given by the PIC.
What happens to trains at the end of a working day?
Trains are often shunted onto a yard, depot, or siding for fuel, maintenance, stabling, or cleaning.
What is learned as part of route learning?
Depot shunts and various stopping positions for each traction.
What are maintenance sheds used for?
Various types of repair and maintenance work.
What protection arrangements must be in place for staff and contractors?
Appointing a DP to authorise entry, use of hazard klaxons, derailers, position lights, and stop boards.
What should you do when entering a shed?
Stop at the entrance of the walkway and await authority to proceed if necessary.
What measures have been implemented to protect employees?
Side rails, isolation switches, warning lights, and sirens.
What do side rails protect against?
They protect walking areas from the movement of trains and help prevent people from falling into inspection pits.
What is the function of isolation switches?
They remove power from traction units and equipment in the event of an emergency.
What do warning lights and sirens indicate?
They warn of the movement of a train into or out of a building.
