Hanoi Metro tweeted videos on June 26 and July 10 showing test trains running on the new line. The 13.1km line will have 12 stations linking Cat Linh Street in Dong Da district in Hanoi with Yen Nghia bus station in Ha Dong district. Local news agency VietnamPlus reports the train has undergone a test run on each section in July before starting trials on the whole system in August. This is the first of two metro lines under construction in the city. Line 3 will run from Nhon via Cat Linh Street to Hanoi station and will be about 21km long. Line 3 is due to open in 2020. Hanoi, which has a population of 7.5 million, plans an eight-line network with a total length of about 318km.