From the October 29, 2012 issue of Fortune - - The Economy According to Union Pacific. In an interview with CEO Jack Koraleski, Koraleski responnds to the question of Union Pacific really being an infotech company:
"Very much so. Technology controls the movement of the trains and to some extent the safety of the trains. There are 4,000 pieces of detection equipment throughout the network. As trains go over, they're measuring the temperature of the bearings, the impact of the car as it rides on the rail and whether there's a bump on it, the sound of the wheels on the rail for anomalies and patterns. It's part of our predictive maintenance. When you start to see patterns and something's not right, you need to pull that car out and have it inspected."
More information on the Union Pacific predictive maintenance program at this Wall Street Journal article.
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