NYC Transit Signal System Signal Blocks, Types, and Track Layouts
NYC Transit Signal System: Signal Blocks, Types, and Track Layouts
Study online at https://quizlet.com/_judodi
1. What is a signal block? A length of track of defined limits, governed by an interlocking
or automatic signal.
2. What governs the entry into a An automatic signal or an interlocking signal.
signal block?
3. What does a clear signal as- It authorizes the train to enter the block it protects.
pect indicate?
4. What does a signal at danger It is not safe for the train to enter the block.
indicate?
5. What are the two main types Light Signals and Miscellaneous Signals.
of fixed signals?
6. What are automatic signals To govern the movement of trains running in the established
used for? direction of traffic on main tracks.
7. What is an interlocking signal? A fixed signal at an interlocking that governs train movement
entering and using a route or block.
8. What is the purpose of a home To govern train movement entering and using a route or block.
signal?
9. What is an interlocking? An arrangement of signals and switch appliances interconnect-
ed to ensure proper sequence of movement.
10. What is a signal aspect? The position, form, and color of a signal.
11. What does a yellow signal col- Proceed with caution; be prepared to stop.
or indicate?
12. What does a red signal color Stop.
indicate?
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NYC Transit Signal System: Signal Blocks, Types, and Track Layouts
Study online at https://quizlet.com/_judodi
1. What is a signal block? A length of track of defined limits, governed by an interlocking
or automatic signal.
2. What governs the entry into a An automatic signal or an interlocking signal.
signal block?
3. What does a clear signal as- It authorizes the train to enter the block it protects.
pect indicate?
4. What does a signal at danger It is not safe for the train to enter the block.
indicate?
5. What are the two main types Light Signals and Miscellaneous Signals.
of fixed signals?
6. What are automatic signals To govern the movement of trains running in the established
used for? direction of traffic on main tracks.
7. What is an interlocking signal? A fixed signal at an interlocking that governs train movement
entering and using a route or block.
8. What is the purpose of a home To govern train movement entering and using a route or block.
signal?
9. What is an interlocking? An arrangement of signals and switch appliances interconnect-
ed to ensure proper sequence of movement.
10. What is a signal aspect? The position, form, and color of a signal.
11. What does a yellow signal col- Proceed with caution; be prepared to stop.
or indicate?
12. What does a red signal color Stop.
indicate?
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