As a center of both international trade and immigration, the Los Angeles region is home to both extreme wealth and extreme poverty, and has one of the largest transit-dependent populations in the country. METRANS is committed to addressing the transportation challenges of regions such as Los Angeles. METRANS includes the Pacific Southwest Region University Transportation Center, METRANS Tier 1 University Transportation Center, MetroFreight, National Center for Sustainable Transportation, Southwest Transportation Workforce Center, and Center for Sustainable Cities.