Rail congestion that caused headaches for shippers of everything from corn to coal may start to ease in 2015 as operators spend more to increase capacity. The entire transportation industry experienced capacity strains in 2014 as the U.S. economy continued to recover. Rail was one of the hardest hit areas, with unexpectedly strong demand and bad weather taking their toll on service. Severe delays for shipments of corn, soybeans and other crops in the upper Midwest began in early 2014, with bitterly cold temperatures forcing operators to run shorter, slower trains even as a record harvests produced more grain needing transport. The snarls returned after another bumper harvest in the autumn. The coal industry also has complained of significant delays, particularly in the western U.S. To fix this, railroads including BNSF Railway Co., owned by Warren Buffett’s Berkshire Hathaway Inc., are collectively spending […]