15. Supplementary Notes Project performed in cooperation with the Texas Department of Transportation and the Federal Highway Administration. Project Title: Maintaining Project Consistency with Transportation Plans throughout the Project Life Cycle with an Emphasis on Maintaining Air Quality Conformity URL: http://tti.tamu.edu/documents/0-6758-1.pdf 16. Abstract Federal and state transportation planning statutory and regulatory laws require transportation projects to be consistent with transportation plans and improvement programs before a federal action can be taken on a project requiring one. Significant delays in project delivery can occur if the federal funding is withheld when projects are found to be inconsistent with transportation plans and improvement programs. This issue is especially critical for projects in nonattainment and maintenance areas because an inconsistent project might trigger a conformity failure or delayed determination for the entire plan and/or program.