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W&H MAIN YARDS: The Signal Guide - Aspect


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.

Baltimore and Ohio had no Permissive Block

Chesapeake and Ohio had no Permissive Block

Permissive Block
Pennsylvania


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