Unit 124 is located along the I80 corridor between Sacramento/Lake Tahoe and San Francisco. It reads to all traffic traveling west toward Vacaville, Fairfield, San Francisco, Oakland, SF East Bay, Napa, Sonoma and Vallejo. Points of interest include the Nut Tree Plaza shopping mall, Vacaville Premium Outlets, Cache Creek Casino, Travis Air Force Base, Six Flags Discovery Kingdom and the Sacramento Delta and bay.