The Intermodal Transportation Database is defined in Section 6303 of Title 49, United States Code, to include information on the volumes of freight and passenger movement by mode, origin, and destinations; location and connectivity of transportation facilities; information on location and connectivity of transportation services; and a national accounting of expenditures and capital stocks on each mode of transportation and intermodal combination.

For freight volumes, see:

• Freight Analysis Framework
• Commodity Flow Survey
• Transborder Freight Data Program

For volumes of intercity passenger travel, see:

• Airline passenger origins and destinations
• American Travel Survey

For volumes of local passenger travel, see:

• Local Area Travel Characteristics of Households (coming soon)

For location and connectivity of transportation facilities, see:

• Intermodal Passenger Connectivity Database
• Intermodal freight connections in the National Transportation Atlas Database

For a national accounting of expenditures, capital stocks, and related transportation economic accounts, see:

• Transportation Fixed Assets
• Transportation Satellite Account
• Government Transportation Financial Statistics