#TechTuesday: We use a combination of lasers and cameras to inspect trains as they pass at 70 miles per hour. These "In Advance" inspections are done with Machine Vision. As a train passes through the Machine Vision imaging area, lasers and cameras provide a three-dimensional model of each piece of equipment. The model and images can be viewed remotely from any Union Pacific computer. So far, the system is able to identify and measure 22 components of a train. Read more: https://www.up.com/about