The volume of goods transported multiplied by the transportation distance. Freight volume refers to the quantity of goods loaded and transported to the destination point by means of transportation; transportation distance refers to the distance from the shipping point to the receiving point. Freight turnover refers to the cumulative number of the weight of each batch of goods actually transported by various means of transportation multiplied by the transportation distance during the reporting period. It is an indicator that comprehensively reflects the results of transportation production.