The Beijing subway's Line 6 is scheduled to begin operating by the end of the year after undergoing more than two years' construction, metro authorities said over the weekend.

Passengers will first be able to travel Line 6, which will run from Wuluju in Haidian district in the west of the city to Caofang in Chaoyang district in the east, on Dec 28. Among its many benefits, the new line is expected to alleviate traffic congestion, according to the Line 6 project department of the China Railway Tunnel Group.

"It's believed subway Line 6, with its greater space for passengers and faster speed, will lead to smoother passenger flow during rush hours," said Wu Wenjie, deputy director of the department.