The document describes two scenarios - Scenario S and Scenario X. Scenario S is the preferred alternative and focuses on creating mixed-use centers around major transportation areas like transit hubs. It plans for a few regional centers and many neighborhood centers to provide close access throughout the area. Scenario S results in lower vehicle miles traveled, higher walk/bike and transit use, and reduced transportation emissions compared to Scenario X. Scenario X continues current trends with less dense, more auto-oriented development and no regional transit.