Welcome to PSTA The Pinellas Suncoast Transit Authority (PSTA) was formed in 1984 through the merger of two pre-existing properties to provide safe, convenient, and economical public transportation to the population in PSTA's service area as cost effectively, and service effectively as possible. PSTA presently operates 158 transit coaches and 10 trolleys on 37 fixed routes and 7 commuter routes.