FrontMatter -- Acknowledgment of Review Participants -- Preface -- Abbreviations -- Contents -- Summary -- 1 Introduction -- 2 History and Status of the U.S. Road System -- 3 Effects of Roads on Ecological Conditions -- 4 Ameliorating the Effects of Roads -- 5 Legal Context for Planning and Policy -- 6 Planning and Assessment -- 7 Integrating Obstacles and Opportunities -- 8 Conclusions and Recommendations -- References -- Appendixes -- Appendix A Biographical Information on Committee Members -- Appendix B Spatial Scale of Road Effects on Ecological Conditions: Annotated Bibliography -- Appendix C Congressional Declaration of National Environmental Policy--National Environmental Policy Act of 1969.