State highway departments and transportation agencies have a continuing need to keep abreast of operating practices and legal elements of specific problems in highway law. This report is a new paper, which continues NCHRP's policy of keeping departments up-to-date on laws that will affect their operations. This paper will be published in a future addendum to "Selected Studies in Highway Law" (SSHL). The author provides an overview of legal requirements, identifying key provisions of the Clean Air Act (CAA) and Intermodal Surface Transportation Efficiency Act of 1991 (ISTEA) that now govern state and regional transportation planning and their interrelationship. The reader should gain an understanding of the federal statutory framework and the regulatory requirements applicable to both state and regional transportation planning. This report should be useful to state transportation directors, attorneys, planners, environmental specialists, public information specialists, policy staff, and right-of-way officials. The report is organized as follows: (I) Introduction; (II) The Clean Air Act and the Requirement for State Implementation Plans; (III) Overview of the Transportation Planning Process; (IV) Conformity; (V) ISTEA Environmental Programs Relating to Air Quality; (VI) Conclusion; Endnotes; and Appendix A--Glossary of Acronyms.

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    • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
  • Corporate Authors:

    Transportation Research Board

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  • Publication Date: 1994-12


  • English

Media Info

  • Media Type: Digital/other
  • Features: Appendices;
  • Pagination: 32 p.
  • Serial:
  • Publication flags:

    Open Access (libre)

Subject/Index Terms

Filing Info

  • Accession Number: 00716800
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Feb 6 1996 12:00AM