The Arlanda Line (Swedish: Arlandabanan) is a 19-kilometre (12 mi) long railway line which allows trains on the East Coast Line to reach Stockholm-Arlanda Airport in Sigtuna Municipality, Sweden. The Arlanda Line branches from the East Coast Line at Rosersberg and rejoins again at Myrbacken. It is built for speeds of 200 kilometres per hour (120 mph), is electrified at 15 kV 16 2⁄3 Hz AC and is double track.