Knight-Swift Transportation is by far the largest asset-based full-truckload carrier in the United States. About 80% of revenue derives from asset-based truckload shipping operations (including for-hire dry van, refrigerated, dedicated contract). The remainder stems from highway brokerage and other asset-light logistics services (11%), as well as rail intermodal (9%), which uses the Class-I railroads for the underlying movement of the firm's shipping containers.Knight-Swift Transportation Holdings Inc through its subsidiaries, operates the largest truckload fleet in North America as well as extensive rail intermodal and non-asset based freight brokerage and logistics management services.