Abstract
In recent years companies try to reduce logistics cost. Trucking companies are now faced to cut-off their fee, because of entry of the competitors to the market. So they try to improve their productivity, using IT and brainpower. Such trends has been described in numerous case but has scarcely tested statistically. To explore this theme, we examine TFP of trucking company in these 20 years. Next we investigate and build a dataset about the financial flow from manufacturing companies to the trucking company in same decades. Successive correlations revealed that Cost reduction of host companies decrease the TFP of trucking Companies.