In early 2005, more than 320,000 rail cars flooded Union Pacific Railroad's 32,400-mile network. Many cars were stalled in yards or taking extra days to reach their destination. Why? Because North America's largest Class I didn't have enough crews and locomotives to accommodate mushrooming traffic. Also, several severe storms in southern California and the Sierra Nevada region had washed out parts of key mainlines and the railroad had difficulty getting cars moving after weather-related setbacks while handling unprecedented volumes.
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