EWITS was a six-year study funded jointly by the federal government and the Washington State Department of Transportation as a part of the Intermodal Surface Transportation Efficiency Act of 1991. Dr. Ken Casavant of Washington State University was Director of the study. A state-level Steering Committee provided overall direction pertaining to the design and implementation of the project. The Steering Committee included Jerry Lenzi, Chairperson (WSDOT, Eastern Region); Richard Larson (WSDOT, South Central Region); Don Senn (WSDOT, North Central Region); Charles Howard (WSDOT, Planning Manager); and Jay Weber (Douglas County Commissioner). Linda Tompkins represented the Washington State Transportation Commission on the Steering Committee. An Advisory Committee with representation from a broad range of transportation interest groups also provided guidance to the study.