Signals Flashcards
What 7 details are to be completed on a signallers caution order?
Name of signal box
Date
Time
TDN
Destination to and from
Signal post number
Signallers signature
What are the exceptions to pass a dwarf or disc signal at the stop position?
• Defective
• single line working
What are the authorities needed with the exceptions to pass a dwarf or disc signal at stop position?
• Verbal instruction or hand signaller
• pilot’s authority
Under what rule can you pass an automatic stop signal at stop position?
Rule 1, section 3
Explain the steps of complying with rule 1 section 3
• Stop train.
• Don’t assume the signal is defective, but consider the track ahead could be occupied, obstructed or damaged.
• do not pass if line ahead is known or seen to be occupied until train ahead moves out of sight
• then consider if it is unsafe to proceed due to gradient, faults in train/defective isolated equipment, bad weather conditions, restricted visibility
• make call to rule 1 sec 3 number
• follow prompts and leave name, motor number and signal number
• driver then makes announcement about sudden trip, sounds a long whistle then proceeds ahead. Afterwards resetting the trip.
• proceed with extreme caution until whole train has passed next fixed signal.
What is the definition of extreme caution when complying with rule 1 section 3?
Proceed at maximum 25km/h until whole train has passed next fixed signal
What are the 5 classes for two position signals?
Disc
Dwarf
Distant
Home
Calling on
What do two position fixed home signals protect? (5 answers)
Stations
Signal boxes
Sidings
Level crossings
Junctions
What does a two position signal at stop mean? (4 answers)
•Laying of points is unknown
•The track ahead may be occupied
•The driver must not proceed past the •signal unless authorised to do so
•The driver will not know the aspect of the next signal
What does a two positions home signal at proceed mean? (4 answers)
• the points if any are set for the move
• the track ahead is clear for the next fixed signal
• proceed at either track speed of other speed require, such as diverging
• the signal aspect in advance is unknown and the driver must be prepared to stop
In two position signals, what are distant signals used for, and how many aspects can they show?
Used as a warning of the home signals ahead.
They can show only caution and proceed
When can two position distant signals be placed to caution? (3 answers)
• when a train passes the signal
• whenever there is an obstruction on the line
• whenever there is danger on the line
True or false: Disc signals are both a type and a class?
True
What do disc signals protect?
(4 answers)
• Running line to running line
• running line to siding
• siding to siding
• siding to running line
True or false: Two position dwarf signals perform the same role as disc signals?
True
