Single Line Working (SLW) Flashcards
GERT8000-P1
What is the principle of SLW (Single Line Working)
When one of a double line becomes blocked, single line working by pilot allows trains to travel over the other line in either direction.
What information must the signaller remind the PILOT of before filling out any forms?
Controlled level crossings that are protected by signals.
Automatic Level Crossings.
Barrow or Foot crossings with White-light indications.
Unworked Points.
Intermediate signal boxes which are closed and when they will re-open.
Temporary/Emergency speed restrictions (either on the single line or entering/exiting the single line).
What form must you complete when the PILOT dictates the details to you?
RT3192 (Signaller’s Single Line Working Form).
During SLW, how would you signal trains on unobstructed lines?
Where possible, normally.
When is a hand signaller NOT required during SLW, in order to bring trains from a wrong-direction movement back onto a line in the normal direction?
IF:
A main aspect signal which applies to trains leaving the single line is provided at the crossover,
OR
The PILOT travels with every train over the single line in the wrong direction.
What 3 times can a signaller authorise a movement during SLW - without the PILOT being present?
To authorise a movement to/from an unaffected route/junction.
Over a trailing crossover on approach to an obstruction.
To authorise an assisting train to foul the single line without the PILOT - but with the PILOT’s permission.
During SLW - What is the distance past the hand signaller or an main aspect signal that must be clear before accepting a train?
183m
When crossing trailing points during SLW, where does the train stop for instructions?
If there is a hand signaller, by them.
If there is no hand signaller, then at the signal box.
During SLW - what is the distance past trailing points where a single line will return to a normal line, that must be clear to accept a train?
400m
