The preparation of the Transportation Improvement Program (TIP) is a requirement in order to qualify the region for continuing eligibility for federal highway and transit funding assistance. The TIP is a program of publicly funded transportation improvements for the OKI region. Although OKI produces the TIP on a biennial basis, each edition covers a period of four years. Along with an overview of the transportation planning process through which the projects are generated, the TIP provides a listing, by county, of all federally-assisted highway and transit improvements that are contemplated by municipal, county, or state governments or transit authorities.