The FRA has released a study showing an improvement of around 22% between 1990 and 2006 in freight rail fuel efficiency. "While all types of transportation are vital to the distribution of goods across the country, this study shows that utilizing America's freight rail system can lead to significant fuel savings," said FRA Administrator Joseph Szabo. "The environmental benefits of these positive changes over the last two decades are enormous. We look forward to working with the freight rail industry to make sure these gains continue." As reasons for the increase in fuel efficiency, Szabo cited improvement in diesel-electric locomotives, increased use of doublestack trains, track and signal improvements, and longer trains.
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