LIRR Definitions & Signals Latest Update 2024- 2025 250 Questions and Correct Answers Guaranteed A+ Distant Switch Indicator (DSI)
NAME: Caution Indicator
INDICATION: Facing point switch(es) open. Trains exceeding Slow speed must at once reduce to that speed approaching switch or switches prepared to stop.
NOTE: Numeral on signal mast indicates the number of facing point switches connected
to the signal. - CORRECT ANSWER:
Distant Switch Indicator (DSI)
NAME: Clear Indicator.
INDICATION: Facingpointswitch(es)closed.
NOTE: Numeral on signal mast indicates the number of facing point switches connected
to the signal. - CORRECT ANSWER:
NAME: Absolute Slow-clear.
INDICATION: Proceed; Slow speed within interlocking limits. Track clear to next
interlocking signal.
Approach next interlocking signal prepared to stop. - CORRECT ANSWER:
NAME: Absolute Slow-clear.
INDICATION: Proceed; Slow speed within interlocking limits. Track clear to next
interlocking signal.
Approach next interlocking signal prepared to stop. - CORRECT ANSWER:
NAME: Absolute Slow-clear.
INDICATION: Proceed; Slow speed within interlocking limits. Track clear to next
interlocking signal.
Approach next interlocking signal prepared to stop. - CORRECT ANSWER:
NAME: Absolute-Clear.
INDICATION: Proceed; Track clear to next interlocking signal. Approach next
interlocking signal prepared to stop. - CORRECT ANSWER: 1 / 3
NAME: Absolute-Clear.
INDICATION: Proceed; Track clear to next interlocking signal. Approach next
interlocking signal prepared to stop. - CORRECT ANSWER:
NAME: Absolute-Clear.
INDICATION: Proceed; Track clear to next interlocking signal. Approach next
interlocking signal prepared to stop. - CORRECT ANSWER:
NAME: Absolute-Clear.
INDICATION: Proceed; Track clear to next interlocking signal. Approach next
interlocking signal prepared to stop. - CORRECT ANSWER:
NAME: Absolute-Medium-clear.
INDICATION: Proceed; Medium Speed within interlocking limits. Track clear to next interlocking signal.
Approach next interlocking signal prepared to stop. - CORRECT ANSWER:
NAME: Absolute-Medium-clear.
INDICATION: Proceed; Medium Speed within interlocking limits. Track clear to next interlocking signal.
Approach next interlocking signal prepared to stop. - CORRECT ANSWER:
NAME: Absolute-Medium-clear.
INDICATION: Proceed; Medium Speed within interlocking limits. Track clear to next interlocking signal.
Approach next interlocking signal prepared to stop. - CORRECT ANSWER:
NAME: Absolute-Medium-clear.
INDICATION: Proceed; Medium Speed within interlocking limits. Track clear to next interlocking signal.
Approach next interlocking signal prepared to stop. - CORRECT ANSWER:
NAME: Advance Approach. (ZONE A)
INDICATION: Proceed prepared to stop at the second signal. Trains exceeding Limited Speed must begin reduction to Limited Speed as soon as engine passes the Advance
Approach signal. - CORRECT ANSWER:
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NAME: Advance Approach. (ZONE A)
INDICATION: Proceed prepared to stop at the second signal. Trains exceeding Limited Speed must begin reduction to Limited Speed as soon as engine passes the Advance
Approach signal. - CORRECT ANSWER:
NAME: Advance Approach. (ZONE A)
INDICATION: Proceed prepared to stop at the second signal. Trains exceeding Limited Speed must begin reduction to Limited Speed as soon as engine passes the Advance
Approach signal. - CORRECT ANSWER:
NAME: Advance Approach. (ZONE A)
INDICATION: Proceed prepared to stop at the second signal. Trains exceeding Limited Speed must begin reduction to Limited Speed as soon as engine passes the Advance
Approach signal. - CORRECT ANSWER:
NAME: Advance Approach. (ZONE A)
INDICATION: Proceed prepared to stop at the second signal. Trains exceeding Limited Speed must begin reduction to Limited Speed as soon as engine passes the Advance
Approach signal. - CORRECT ANSWER:
NAME: Approach
INDICATION: Proceed approaching next signal prepared to stop. Train exceeding
Medium speed must at once reduce to that speed - CORRECT ANSWER:
NAME: Approach
INDICATION: Proceed approaching next signal prepared to stop. Train exceeding
Medium speed must at once reduce to that speed - CORRECT ANSWER:
NAME: Approach
INDICATION: Proceed approaching next signal prepared to stop. Train exceeding
Medium speed must at once reduce to that speed - CORRECT ANSWER:
NAME: Approach
INDICATION: Proceed approaching next signal prepared to stop. Train exceeding
Medium speed must at once reduce to that speed - CORRECT ANSWER:
NAME: Approach
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