The Harris County Toll Road Authority improves mobility in the Greater Houston Metropolitan area through excellence in the operation of urban toll highway systems while upholding a commitment to leadership, public service and the quality of life. The Toll Road Authority was created by Harris County Commissioners Court in 1984 after Harris County voters approved a referendum to release $900 million in bonds to construct toll roads in the rapidly growing Greater Houston Metropolitan area. The authority, a division of Harris County's Public Infrastructure Department, is an enterprise fund of Harris County and relies on charges from users of the toll road system to fund operations, debt service and future projects. Led by an executive director, the authority operates through multiple divisions that include toll operations, roadway and facilities maintenance, engineering, information technology, finance, legal, human resources, special projects, communications and incident management. The Harris County Toll Road Authority maintains a location in Houston.