Metro-operated parking lots are free on weekends and most federal holidays. SmarTrip® cards with full parking fees are the only accepted form of payment for parking except at Anacostia, Franconia-Springfield, Largo Town Center, New Carrollton, Shady Grove and Vienna/Fairfax-GMU where major credit cards are also accepted. Visit the Trip Planner at MetroOpensDoors.com or call 202-637-7000 (TTY 202-638-3780)