Plan envisions economically and environmentally healthy communities framed by open space and multimodal transportation systems, and advocates locating development in urban growth areas so farmlands, forests and other natural resources can be preserved. Central Puget Sound region encompasses King, Kitsap, Pierce and Snohomis counties.

This report from the second Strategic Highway Research Program (SHRP 2), which is administered by the Transportation Research Board of the National Academies, describes a framework—including for long-range planning, corridor planning, project programming, environmental review, and environmental permitting— that supports collaborative business practices for reaching decisions on adding highway capacity when necessary.