As time goes by the ballast settles and under repeated heavy loads and the underlying land becomes a little uneven. In comes the Tamper, a ballast tamping machi

As time goes by the ballast settles and under repeated heavy loads and the underlying land becomes a little uneven. In comes the Tamper, a ballast tamping machine. This is a long heavy machine that runs on the track.Quite strong it lifts a length of track under load a few inches and tamping arms reach down and force fresh ballast under with dynamic level sensors and moves on down the track. Tracks are surveyed with sensors on trains and ballast tamping/washing/etc are scheduled. https://www.youtube.com/watch?v=WqLynLWLd8Y https://www.youtube.com/watch?v=WqLynLWLd8Y