In the U.S., transportation is facilitated by road, air, rail, and water networks. Most people rely on automobile for shorter distance travel and on airplane for longer distance travel. However, most cargoes travel by railroad, truck, pipeline, or boat. Further, perishables and premium express shipments are made possible through air shipping.
Both the federal and state governments of the U.S. focus on a fast, safe, efficient, accessible, and convenient transportation system that meets the national interests and enhances the quality of life of people in the U.S. In the U.S., the fields of transportation are primarily governed by federal statutes. In addition to federal statutes, state law also supplements the field of transportation.
The states of the U.S. have their own policies, rules, and regulations for the administration and coordination of transportation facilities and services for highways, railroads, mass transit systems, ports, waterways, and aviation facilities within the boundaries of their jurisdiction. The agency that formulates comprehensive statewide master plan for the balanced development of public and private transportation facilities vary from state to state. Each state has its own department/agency that controls and manages the transportation infrastructure within its boundaries. In almost all states, the activities relating to management of public transportation systems and the state highway system are carried out by the respective state department of transportation. For example, in California, the California Department of Transportation (Caltrans) is responsible for improving the mobility across the state. Whereas, in some states some other agencies provide for the development and administration of the transportation system in the state. For example, in Kentucky, the Kentucky Transportation Cabinet (KYTC) is responsible for overseeing the development and maintenance of a safe, efficient, multi-modal transportation system in the state.