A flatbed and specialized freight carrier and two auto transport companies were the fastest-growing businesses on a list of the 50 largest U.S. trucking firms last year. Most companies on the list grew faster as the U.S. economy accelerated in 2014.

That’s good news for shippers who need a healthier, financially stable base of carriers to provide transport capacity as the U.S. economy continues to expand in 2015.

Daseke, an Addison, Texas-based company specializing in heavy industrial freight hauled by open-deck flatbed trailers, is the fastest-growing carrier on the 2015 Top 50 Trucking Companies list produced by SJ Consulting Group for JOC.com. The list, published since 2003, ranks private and public for-hire trucking companies by 2014 revenue.

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