Old Dominion Freight Line provides warehousing and logistics services across the United States using SAP's yard management functionality. Yard management allows companies to efficiently manage the flow of vehicles and materials through the yard by tracking activities like check-in, loading, scheduling docks, and check-out. Implementing yard management requires understanding SAP's features, integrating it with warehouse and transportation processes, and following best practices like setting clear goals, making fast decisions, and leveraging industry expertise.