Track Geometry Car

A track geometry car (TGC) is an automated track inspection vehicle on a rail transport system used to test several geometric parameters of the track without obstructing normal railroad operations. Some of the parameters generally measured include position, curvature, alignment of the track, smoothness, and the crosslevel of the two rails. The cars use a variety of sensors, measuring systems, and data management systems to create a profile of the track being inspected. (Source: http://en.wikipedia.org/wiki/Track_geometry_car)

I was overjoyed to see the TGC coming down the other track while a freight was passing by. I didn't have my tripod with me so this is not a true long exposure, but I used Photoshop's stack mode to stitch together fifteen different photos to get the same type of effect.