The total length of the 4 new lines is 69.8km
BEIJING, Dec. 30 (Xinhua) -- Beijing put four new subway lines into operation on Sunday, increasing its daily passenger capacity by about 1.5 million.
The new lines have brought the number of subway lines in Beijing to 16, raising the national capital's total subway transport capacity to over 9 million passengers per day, said the Beijing Metro Company.
The total passenger transport capacity is expected to reach over 10 million on peak days.
At 442 kilometers, Beijing has the country's longest urban subway system.
The newly-opened lines include the new No. 6 Line, the southern section of the current No. 8 Line, the northern section of the current No. 9 Line and the southern and western stretches that complete a loop for the current No. 10 Line.
From 2013 to 2015, Beijing will put at least one new subway line into operation each year, according to the Beijing Metro Company.
By 2015, the number of subway lines in Beijing will reach 19, with a combined length of 561 km. By 2020, the total subway length is expected to increase to 1,000 km.
The new lines opened are: the line 6, Line 8 south, Line 9 north, second phrase of line 10.