how trains change tracks

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[postlink]https://sirilankawahode.blogspot.com/2016/05/how-trains-change-tracks.html[/postlink]http://www.youtube.com/watch?v=L_wOPY5Pu-Aendofvid [starttext] rails changing tracks, rail track joints Kindly note that this video is copied from some facebook page... and i put this for learning purposes only....

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