Built by the thousands from 2012, the TrinityRail® 31K Crude Oil Tank Cars are a prominent part of crude oil shipments across North America.  With recent developments in oil extraction, mile-long unit trains of these duty-specific cars – complete with visually unique 'end shields' - are running to nearly all corners of the country.  With oil demand and output at all-time high levels, thousands of these cars have been built in over eight reporting marks, with much more to come. 

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