Public involvement is a key component of the metropolitan transportation decision-making process. As mandated in the Intermodal Surface Transportation Efficiency Act (ISTEA) and other supporting Federal regulations, and as continued in the Transportation Equity Act for the 21st Century (TEA-21), Metropolitan Planning Organizations (MPOs) must establish and periodically review and update their public involvement processes. These processes should assure early and continued public awareness of and access to the transportation decision-making process. Involving the public is a major challenge, especially in the metropolitan planning process, which is inherently complex, has a long time horizon, and is removed from project specific planning.