Chicago Union Station Company
Signal Rules
May 21, 1928
Stop Signal
Permissive Signal
Slow Speed Turn-out Signal
Approach Signal
Approach Slow Speed Signal
Clear Signal
Clear Slow Speed Signal
July 1, 1952
Clear (Rule 281)
Approach (Rule 285)
Caution (Rule 285A)
Slow-Clear (Rule 287)
Slow Approach (Rule 288)
Restricting (Rule 290)
Stop-and-Proceed (Rule 291)
Stop-signal (Rule 292)
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