"Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration." Includes bibliographical references (pages 159-163).

Final report: Summary ; Introduction ; The impacts of traffic improvements on emissions ; State of the practice ; Available methodologies ; Sketch-planning approaches ; Land-use models ; Travel demand models ; Traffic operation models ; Mobile emission models ; Strategic approach to methodology ; Recommended methodology ; Derivation of HCM assignment module ; Derivation of travel behavior response module ; Derivation of growth redistribution module ; Derivation of modal activity module ; Derivation of vehicle emission module ; Validation of methodology ; Conclusions and recommendations -- User's guide: Introduction ; The methodology ; The HCM assignment module ; The travel behavior response module ; The growth redistribution module ; The modal activity module ; The vehicle emission module ; Base case ; Case study 1: Add freeway lane--rural ; Case study 2: Close freeway lane--urban ; Case study 3a: Remove freeway HOV lane ; Case study 3b: Remove freeway HOV lane ; Case study 4: Narrow street ; Case study 5: Access management ; Case study 6: Intersection channelization ; Case study 7: Signal coordination ; Case study 8: Transit improvement ; Case study 9: Remove park-and-ride lot ; Case study 10: Long-range regional transportation plan.