Podcast
Questions and Answers
Question 1: What does a track circuit do?
Question 1: What does a track circuit do?
- Controls the speed of a train on a section of track
- Transmits signals to the train operator
- Prevents trains from colliding
- Detects the presence of a train on a section of track (correct)
Question 2: What is the bell code for a train out of section, and is it preceded by call attention?
Question 2: What is the bell code for a train out of section, and is it preceded by call attention?
- Two bells, yes
- Three bells, yes
- Four bells, no
- One bell, no (correct)
Question 3: What is the bell code for a class 6 freight train, and what is the maximum speed the train can run at?
Question 3: What is the bell code for a class 6 freight train, and what is the maximum speed the train can run at?
- Four bells, maximum speed of 60 mph
- Two bells, maximum speed of 40 mph (correct)
- One bell, maximum speed of 30 mph
- Three bells, maximum speed of 50 mph
Question 4: What does a facing point lock do?
Question 4: What does a facing point lock do?
Question 5: When you have seen a train's tail lamp, what are the 3 ways a train can leave the clearing point?
Question 5: When you have seen a train's tail lamp, what are the 3 ways a train can leave the clearing point?
Flashcards
Track circuit function?
Track circuit function?
Detects the presence of a train on a section of track.
Bell code for train leaving section?
Bell code for train leaving section?
One bell, and it is not preceded by a call attention signal.
Bell code/speed for Class 6 freight?
Bell code/speed for Class 6 freight?
Two bells, with a maximum speed of 40 mph.
Facing point lock function?
Facing point lock function?
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Train leaving clearing point?
Train leaving clearing point?
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Study Notes
Track Circuit and Signaling
- A track circuit is a section of track that is electrically isolated from the rest of the track system, providing a safe and reliable means of detecting the presence of a train.
Bell Codes
- The bell code for a train out of section is typically "2-2" and is preceded by the "call attention" signal.
- The bell code for a class 6 freight train is "3-3" and the train is permitted to operate at a maximum speed of 40 mph.
Facing Point Lock
- A facing point lock is a type of interlocking system that prevents a switch from being moved while a train is occupying the section of track leading up to the switch.
Clearing Point Procedures
- After seeing a train's tail lamp, there are three ways a train can leave the clearing point:
- By making a scheduled stop at the next station
- By receiving permission from the dispatcher to proceed
- By following the rules and procedures for leaving the clearing point
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