Hanoi Metro Line 3, also known as the Văn Miếu Line, is a medium-capacity rapid transit service of the Hanoi Metro network, operated by Hanoi Metro Company. Colored dark red on transit maps, the line currently runs from Nhổn, a suburb in Bắc Từ Liêm District, west of city center, to its current terminus in Cầu Giấy Bus Interchange, located in Cầu Giấy district. When fully operational, the line will continue eastbound toward Hanoi Station, providing a direct connection to downtown Hanoi and the city's main railway station. The line operates between 5.30 am and 10pm, with headways of 6 minutes during peak hours, and 10 minutes during off-peak hours. All trains on Line 3 operate with a 4-cars formation.