USDA Transportation Research & AnalysisTransportation Services Division (TSD) serves as the definitive source for economic analysis of agricultural transportation from farm to market. TSD experts support domestic and international agribusinesses by providing market reports, economic analysis, transportation disruption reports, technical assistance, and outreach to various industry stakeholders. Tracking developments in truck, rail, barge, and ocean transportation, TSD provides information and analysis on the four major modes of moving food from farm to table, port to market.