Trucking Info's Evan Lockridge recently wrote an article, For-Hire Freight Continues Setting New Records. In this article, Lockridge reviews the economic indicators to explain the consecutive quarters of rising prices in the freight market. "The Freight TSI (Transportation Services Index) measures the month-to-month changes in for-hire freight shipments by mode of transportation in tons and ton-miles, which are combined into one index. Over the last nine months of 2017, the index rose 6.8% with three quarterly increases. The increase of 2.8% in the fourth quarter was the largest quarterly increase since 2.9% in the first quarter of 2013."