Built at where the former Budget Terminal used to be, T4 will not be linked to the other terminals by SkyTrain. Instead, shuttle buses, which will operate at 5-minute intervals during peak hours, will connect travellers to T2 via an 8- to 10-minute ride — linking them to the Changi Airport MRT Station. The free service, available around the clock, will run from both the public area and airside, for transiting passengers.