Signals

NW Mailing List nw-mailing-list at nwhs.org
Thu Jun 29 15:23:03 EDT 2017


Who's up for another round of "Signals for Dummies"?

Can somebody explain this:

http://www.railpictures.net/photo/552384/

How can the signal be green when a train is coming?

Carl Woods
Richmond, VA

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