BEAVERTON, Ore.--(BUSINESS WIRE)--Demand for truckload services cooled in August after July's tariff-driven pull-forward of imports, according to DAT Freight & Analytics, which operates the DAT One freight marketplace and DAT iQ data analytics service. The DAT Truckload Volume Index (TVI) declined for dry van, refrigerated, and flatbed freight, reflecting fewer loads moved last month versus July: Van TVI: 236, down 8% month over month and 7% lower year over year Refrigerated (reefer) TVI: 1. ...