LIRR Signals and Definitions
Clear-Block - correct answer Proceed; manual block clear.
Stop-signal - correct answer Stop
Clear - correct answer Proceed
Absolute-Clear - correct answer Proceed; track clear to next interlocking signal. Approach next interlocking signal prepared to stop.
Approach-medium - correct answer Proceed approaching next signal at Medium speed.
Medium-clear - correct answer Proceed; Medium speed within interlocking limits.
Absolute-Medium-clear - correct answer Proceed; Medium speed within interlocking limits. Track clear to next interlocking signal. Approach next interlocking signal prepared to stop.
Approach-slow - correct answer Proceed approaching next signal at Slow speed. Train exceeding Medium
speed must at once reduce to that speed.
Approach - correct answer Proceed approaching next signal prepared to stop. Train exceeding Medium speed must at once reduce to that speed.
Caution - correct answer Train exceeding medium speed must at once reduce to that speed. Where a switch is connected with the signal, approach that switch prepared to stop. Approach next signal prepared to stop. Flashing Slow-approach - correct answer Train will proceed in accordance with signal indication within interlocking limits and after clearing the interlocking, proceed under absolute clear indication to the next
interlocking.
Slow-clear - correct answer Proceed; Slow speed within interlocking limits.
Absolute-Slow-clear - correct answer Proceed; Slow speed within interlocking limits. Track clear to next interlocking signal. Approach next interlocking signal prepared to stop.
Slow-approach - correct answer Proceed approaching next signal prepared to stop. Slow speed within interlocking limits.
Restricting - correct answer Proceed at restricted speed
Stop-and-proceed - correct answer Stop; then proceed at Restricted speed.
Block-limit - correct answer Limit of the block
Approach Block-limit - correct answer Proceed approaching next block-limit signal prepared to stop. Train
exceeding Medium speed must at once reduce to that speed.
Stop signal / Train order - correct answer Stop/Orders
Train-order - correct answer Orders
Caution Indicator - correct answer Facing point switch(es) open. Trains exceeding Slow speed must at once reduce to that speed approaching switch or switches prepared to stop.
Clear Indicator - correct answer Facing point switch(es) closed.
Yard Switch Indicator - correct answer White, switch normal, proceed at restricted speed.
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