Air
pollution
has been reduced by control in sulphur and lead contents in petrol,
use of exhaust filters in cars and chimneys
Noise
pollution
has been controlled by reducing the number of vehicles, using
noise suppressors and prohibiting activities producing loud sound
such as mah-jong
One of the first two purpose-built noise enclosures on Tate's
Cairn Tunnel Approach Road protecting closeby highrise Richland Gardens.
Full enclosures with transparent window panels to retain passenger
views are to be erected over the portion of track close to residential properties.
It is an important measure of 
One of the first two purpose-built noise enclosures on Tate's
Cairn Tunnel Approach Road protecting closeby highrise Richland Gardens. 
