Continuing our series of videos and posts to let you #NCLearnAtHome. Though that's where we see them the most, railroad signals are not just for cars at railroad crossings. Signals also govern the movement of trains, indicating when it's safe to proceed, how fast to go, and when and where to stop. Check out the video! And learn more transportation history at www.nctrans.org. #nctrans #nctransportationmuseum #spencershops | N.C. Transportation Museum