I am fascinated by the engineering required for a ride like this. These sections of track are part of the "Norwegian Loop" that rolls the train upside-down twice. On the inversion shown on the left, look carefully at how the track is shaped. Part of the track is offset to the left, but this is done to allow the centerline of the train to move in a straight path as the train rolls inverted.
©2014 by Joel A. Rogers