Semaphore

Here's another one for the trackside fun section: an old steam age rusting semaphore. If you know where to look, these can still be found in and around the rolling hills of northern Pennsylvania and southern New York, as well as other places. It works basically like a traffic light, with red, yellow, and green glass plates/lenses in front of a lamp giving off regular, known as white, light. I also have a Conrail era signal in the works.

Done