The GreatRails North American Railroad Photo Archive
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Semaphores Forever

Still Americas favorite railroad signals even in the age of the 3- color triangle LED signals that seem to be an almost universal replacement for the previous generation of searchlight signals. These are at Readville, MA. The stubby mast to the right is a "dummy" mast. The Book of Rules tells us the signal to the left controls the track dimly visible in the shadows of the foreground.

Photographed by Ron DeFilippo, 1974.
Added to the photo archive by Ron DeFilippo, December 17, 2019.
Railroad: Penn Central.

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Visitor Comments about this Photo:

Nice picture, Ron ! Are those buildings in the pictures part of the NH shop complex ? I have passed this location many times on /Amtrak or MBTA.

Posted by Bob Burnham on 2019-12-17 17:56:03

Bob, those were businesses served by the railroad. The tracks in the foreground were the leads to the shops and the old Dedham branch.

Posted by Joe Minahan on 2019-12-18 05:29:50

I am under the impression the the short mast on the right is (or was) referred to as a "doll post", indicating that another track (siding or spur) intervenes between the main (controlled by the signal) and the signal tower itself. The blue disc was fairly common, and was mounted for this purpose...

Posted by Thomas Snow on 2019-12-18 22:15:36

Ron on the Signal Mast you notice a shorter signal mast off to the right. This is called a Dummy Mast lower on this you see a Blue Reflector.
This type mast is employed when track intersects with the next has a signal on it.

Posted by Warren Evans on 2021-02-18 19:45:57

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