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W&H MAIN YARDS: The Signal Guide - Pensylvania


(1956)
Clear-block
Name - Clear-block
Indication - Proceed; manual block clear

Clear
Name - Clear
Indication - Proceed

Approach-medium
Name - Approach-medium
Indication - Proceed approaching next signal at medium speed
Note - Trains may proceed approaching next signal at not exceeding 45 miles per hour at signal displaying a yellow triangle outlined in black (also called Approach Limited, ed.)

Medium Clear
Name - Medium Clear
Indication - Proceed; Medium speed within interlocking limits
Note - Trains may proceed at not exceeding 45 miles per hour within interlocking limits, at signal displaying a yellow triangle outlined in black (also called Limited Clear, ed.)

Medium Approach
Name - Medium Approach
Indication - Proceed at medium speed prepared to stop at next signal. Train exceeding medium speed must at once reduce to that speed.

Approach Slow
Name - Approach Slow
Indication - Proceed approaching next signal at slow speed. Train exceeding medium speed must at once reduce to that speed

Approach
Name - Approach
Indication - Proceed prepared to stop at next signal. Train exceeding medium speed must at once reduce to that speed

Caution
Name - Caution
Indication - Train exceeding medium speed must at once reduce to that speed. Where a facing switch is connected with the signal, approach that switch prepared to stop. approach next signal prepared to stop.

Slow-clear
Name - Slow-clear
Indication - Proceed; Slow speed within interlocking limits.

Slow-approach
Name - Slow-approach
Indication - Proceed prepared to stop at next signal. Slow speed within interlocking limits.

Permissive-block
Name - Permissive-block
Indication - Block occupied; for passenger trains, stop; for trains other than passenger trains, proceed prepared to stop short of train or obstruction, but not exceeding 15 miles per hour.

Restricting
Name - Restricting
Indication - Proceed at Restriced speed

Stop-and-proceed
Name - Stop-and-proceed
Indication - Stop; then proceed at Restriced speed.
Note - Freight trains of 90 or more cars or having tonnage of 80 per cent or more of the prescribed engine rating may proceed at Restricted speed without stopping at signals displaying the letter "G" in black.
The engineman must be notified as to the tonnage and number of cars in train before leaving terminals and when consist is changed enroute.

Stop-signal
Name - Stop-signal
Indication - Stop


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