PTS 101 Flashcards
What is single line working?
When a line has been blocked for any reason and the trains have been authorised to travel along another open line in either direction.
What are points and crossovers used for?
Used by trains to go from one line to another.`
Generally, what are points operated from?
They are operated from a signal box and have an identifying number displayed on them.
What are sidings, depots and yards used for?
They are used to store trains and other railway vehicles.
Mileposts are positioned alongside the railway, how far apart are they usually and what are they there for.
They are usually ever quarter of a mile, ad they are used to help identify the location.
What is the running rail?
Two rails that a trains wheels run on.
What are sleepers?
They support the rails and keep them the correct distance apart.
What are fastenings?
They hold the running rails to the sleepers.
What is ballast?
Keeps the track in place.
What is the CESS?
The area alongside the railway.
What is the four-foot?
The space between the running rails of one line.
What is the six-foot?
The space between a pair of lines if they’re a normal distance apart.
What is the ten-foot (wideway)?
If there are 3 or more lines, a wider space is provided between the lines. This space is known as the ten-foot or wideway.
Define the area known as ‘on or near the line’
- you are on a line
- you are within 3 metres (10 feet) of a line and there is no permanent fence or structure between you and the line
- you are doing engineering or technical work on a station platform within 1.25 metres (4 feet) of its edge.
Sidenote: you are not on or near the line if you are crossing the line at a level crossing.
When are you lineside?
- you are within the railway boundary but not on or near the line
- you can be seen by the driver of an approaching train.
sidenote: You are not on the lineside if you are on a station platform.
What is the ‘position of safety’?
A position of safety is a place where it is safe to stand when a train is passing.
When are you in the ‘position of safety’?
- If you are 2 metres away from the nearest line when a train is going above 100mph
- If you are 1.25 metres for a train going below 100mph
What is an authorised walking route?
- this provides safe access to and from a place of work.
- they are found near depots, stations and signal boxes.
- they vary in construction, some are proper walkways and some are just rough paths.
When is a red semaphore signal at danger?
When it’s in the horizontal position.
What will trains do at a danger (red) signal?
Normally, they will stop but, in some situations, they can be authorised to pass them. Which will be authorised by the signaller in some instances of a possession, failed track circuit etc.
What signals cant always be put to danger by the signaller?
Automatic and semi-automatic signals
What does SPRS stand for and what is it used for?
Signal Post Replacement Switch, it is a switch on the signal post (for an automatic signal) which can be changed to danger using a special key.
What are distant singals?
Yellow semaphore signals
What does OLE stand for?
Overhead Line Equipment