Carriages operate on subway line 2 in Nantong. [Photo/Nantong Daily]

Subway line 2 in Nantong, East China's Jiangsu province, started test runs with no loads on June 19, local media outlets reported.

The subway line is capable of accommodating up to 2,132 passengers and operates at a highest speed of 80 kilometers per hour.

Spanning 20.85 km, the subway line has 17 stations with Hepingqiao and Wenfeng stations being the transfer points for subway line 1.

Interior of the carriages running on subway line 2 in Nantong. [Photo/Nantong Daily]

Themed on Yangtze finless porpoises playing in the water, carriages of subway line 2 highlight classic patterns of blue calico, a national intangible cultural heritage in Nantong. The pull handle rings are shaped as a Yangtze finless porpoise. USB charging sockets and wireless charging facilities are also available for passengers.

Over the next three months, Nantong Rail Transit Group Co Ltd will check and improve the technical specification, equipment system, functional availability, safety, and reliability of the subway line, making full preparations for its official operation at the end of the year.