Reusing Signals

[NW Mailing List]

In a message dated 1/1/2008 7:03:28 P.M. Eastern Standard Time,  
nw-mailing-list at nwhs.org writes:

What were the full head signals
all nine lights on one arm used for in Portsmouth  and Roanoke?



You may have reference to a hump signal.  I'm not  sure.   There
were provisions in the rule book effective 4/1/45 for half a dozen
indications that were displayed on three targets (three lights per
target).  No rule number, but "Move Through  Diverging Route  at
Restricted Speed" , for example, was:
TOP TARGET - Three horizontal lights
MIDDLE TARGET -Three horizontal lights
BOTTOM TARGET - Three diagonal lights pointing toward the track.
 
All other indications had the capability of being displayed using two
targets.    The 1951 rule book does not include three-target  signals,
so I guess by then the Operating Department had decapitated one
of the signal heads. NOTE: on three-target signals requiring a  positive
stop, there would have been a 10th light mounted on the signal mast.
                                                     Harry Bundy



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