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September 27, 2010

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Noise reduction work is completed on Line 8

THE city's subway operator has completed noise and vibration reduction work along Line 8, company officials said over the weekend.

Complaints mounted as the line, which opened in late 2007, travels beneath some densely populated communities in Yangpu, Hongkou and Zhabei districts.

Ying Minghong, director of Shanghai Shentong Metro Group, which operates the city's subway network, said the company "would continue monitoring the situation."

Shanghai Shentong said it spent 21 million yuan (US$3.13 million) to upgrade a 5-kilometer stretch of the track along Line 8 to reduce noise.

Train speeds will also be reduced at night to cut down on noise.

Line 8 now complies with a newly enacted regulation that aims to reduce subway noise and vibration, Ying said.

The rule says subway noise is not to exceed 45 decibels in residential and commercial areas in the day, and 35 decibels at night.

City lawmakers urged the firm to look into similar problems on other lines.

Sun Zhang, a railway and subway expert from local Tongji University, said the improved track would cost 16 million yuan per kilometer compared to 10 million yuan for the original.


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