A Look at Changes in Railroad Signaling

A Look at Changes in Railroad Signaling

In “A Look at Changes in Railroad Signaling”, George Hamlin begins by examining some of the historical context of this subject, which was reflected in a wide variety of approaches to these safety devices by different railroads; in some cases with systems exclusive to a single railroad.  Greater standardization is coming to the industry now, however, particularly with the coming of PTC (Positive Train Control) on many routes in the U.S., which means that some long-standing railroad traditions are about to vanish.  Enjoy taking a look at the diversity in signal systems over the years! 

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