BJL14 is a long L-shaped line in Beijing metro network with a route length of 50.8 km. It is a major metro line that connects transportation hubs, large commercial districts, and residential areas from the southwest to the northeast. As the first metro line in Beijing to introduce 6-car type A trains, BJL14 has significantly larger transport capacities.
BJL16 is a traffic artery connecting the north and south in Beijing metro network. It is 49.8 km long with 29 underground stations of which 12 are interchange stations. It has a depot at BeiAnHe, Haidian District and a stabling yard at YuShuZhuang, Fengtai District. BJL16 is the first line in Beijing to introduce 8-car type A trains which can transport up to 2480 passengers.
Line 17 has a total length of 49.7 kilometers, all of which are underground lines, spanning the 4 administrative districts of Tongzhou District, Chaoyang District, Dongcheng District, Changping District, and Beijing Future Science and Technology City , with a total of 21 stations.