Two Position Signals Flashcards
What are the different classes of 2 Position Signals?
Home, Dwarf, Disc, Distant, Calling On
What Types of signals can 2 position signals be?
Light and Disc Type
What 2 aspects can …
2 position Home, Dwarf and Disc signals display?
2 position Distant signals display?
2 position Siding Dwarf and Calling on signals display?
Home, Dwarf, Disc:
Proceed and Stop
Distant:
Proceed and Caution
Siding Dwarf and Calling on:
Proceed and Normal (which means Stop)
Are 2 Position Signals controlled?
Yes
2 Position Signals are dumb
2 position signals are within Station Limits
2 position signals don’t have number speed limits applied to them.
What is another name for Controlled Signals?
Absolute Signals
How are Disc Signals operated?
With a cable attached to a lever in a signal box.
- Day time proceed @ 90 degrees to driver
- Night time proceed dim green light
- Night time stop dim red light
Two Position Home Signals are fixed at and protect …. What?
Stations
Signal Boxes
Sidings
Level Crossings
Junctions
What are Distant Signals used for?
As an advanced warning of the Home Signals ahead.
They can display: Caution or Proceed
A Distant signal cannot be placed at proceed when a Home Signal at that location is at Stop
What are Calling On Signals?
A home signal fitted with a Calling On Signal.
They allow a train to enter an occupied road when the Track Section is Track Circuited.
What is this Home signal and what does it mean?
Two Position Home Signal at Stop Position
What is this Home signal and what does it mean?
Two Position Home Signal at Proceed Position
What is a Two Position
Disc Signal?
What movements does it control?
A Red Circular Disc that can be turned to the side.
Running line to Running Line
Running line to Siding
Siding to Siding
Siding to Running Line
Disc Signal at Stop Position
Disc Signal at Proceed Position
What movements does a Two Position Dwarf Signal control?
Running Line to Running Line
Running Line to Siding
Siding to Siding
Siding to Running Line
What is this Dwarf signal and what does it mean?
Two Position Dwarf Signal at Stop
What is this Dwarf signal and what does it mean?
Two Position Dwarf Signal at Proceed
What is this 2 Position Dwarf signal and what does it mean?
Two Position Siding or Calling On Dwarf at Normal (Stop)
What is this Dwarf signal and what does it mean?
Two Position Siding Dwarf or Calling On Signal at Proceed
What is this Distant signal and what does it mean?
Distant Caution Signal
The next Home Signal will be at Stop
What is this Distant signal and what does it mean?
Distant Signal at Proceed
The next Signal will be at Proceed
