The first phase of Chongqing Rail Transit Line 4 is roughly orientated from east-west. This line starts at Min’an Avenue Station and ends at Tangjiatuo Station. The total length is around 15.6 km, divided into an underground segment of about 10 km, and an elevated section of about 5 km. Nine stations have been constructed along the line.
A plinth track system requires customised sound absorbing panels in between the plinth and the siding.
thirteen noise sensitive sites were detected following a noise survey carried out on Chongqing Metro Line 4. Sound absorbing panels were requested to reduce the noise impact on the surroundings in four sections