This document identifies intermodal technical assistance activities originating within the U.S. Department of Transportation (DOT) which should be of use to metropolitan planning organizations (MPOs) and State and local planners in fulfilling their responsibilities under the Intermodal Surface Transportation Efficiency Act of 1991 (ISTEA) and the Clean Air Act Amendments of 1990 (CAAA). The areas of intermodal technical assistance activity are: air quality analysis; citizen/industry participation; congestion management; economic analysis; environmental and social impact analysis; geographic information systems; intermodal facilities planning; intermodal freight transportation; intermodal systems -- planning and management; metropolitan and statewide planning activities; resource centers; transportation statistics; travel demand forecasting; and travel demand management.