Users can add value to any farecard. Riders pay an exit fare based on time of day and distance traveled. Trips may include segments on multiple lines under one fare as long as the rider does not exit the faregates, with the exception of the "Farragut Crossing" out-of-station interchange between the and stations. At Farragut Crossing, riders may exit from one station and reenter at the other within 30 minutes on a single fare. When making a trip that uses Metrobus and Metrorail, a 50-cent discount is available when using a SmarTrip card.