Photo shows the north Lhasa loop line under construction. [China Tibet News/Jiang Gai]

The total length of Lhasa loop line is about 73 kilometers. At present, 4.9 billion yuan has been spent on construction and basic framework has been formed. According to the construction plan, Lhasa loop line is expected to be completed by the end of this year. This project is meaningful to perfect city traffic network, drive the exploitation and utilization of land around, and reserve space for the urban development in the future.