The Clean Fuel Fleet Program is one of several measures required to improve air quality in the Chicago ozone nonattainment area (Cook, DuPage, Kane, Lake, McHenry and Will Counties, Owego Township in Kendall County and Aux Sable and Goose Lake Townships in Grundy County).

Transportation-related tasks of meeting air quality goals are significant because mobile sources may account for as much as 50% of the ozone and 90% of the carbon monoxide pollution on a national scale. This study contains an outline of the transportation-related requirements for emission inventories, State Implementation Plan submittals, implementation strategies, and possible sanctions for failure to meet the requirements, focusing on four urban areas in Texas that are in non-attainment for various pollutants. Included are a listing of acronyms used and suggested guidance documents.