Transport Topics 100, an annual survey of the largest for-hire and private company motor carriers, accurately and objectively documents the size and scope of the largest trucking operations, and provides timely analysis of trends shaping the industry.
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I've gotten these free for decades. CCJ magazine also comes out with a Top 250 Largest Carriers every year, theirs has a lot more info about each company as far as revenue, equipment, total employees etc. ect....