TMD recently kicked off the Sun Systems COA which is a comprehensive look at the Sun Tran, Sun Link, Sun Express, and Sun Shuttle systems in Greater Tucson. The project will identify opportunities to improve the efficiency, effectiveness, and equity of current transit options; enhance the transit system to better support the needs of the community; and propose recommendations for future service changes or expansions. In early 2023, TMD kicked off the first round of public outreach events to collect input from riders and the general public about their priorities for regional transit service.