Land Transport Authority (LTA) has announced that it will be doing a more in-depth island-wide noise measurement study as part of its ongoing efforts to reduce the impact of railway noise near residential areas to be used to plan for the appropriate noise mitigation measures in the future.
"The installation of the railway noise barriers is gaining momentum, thanks to the additional engineering hours that have been allocated to rail engineers and maintenance crew since last December when the implementation of early closures, late openings, and full day closures along certain stretches of the rail network started," the authority stated.
"These extra hours have been useful in providing the crew with more track access time for maintenance and improvement works, including the installation of noise barriers,"
According to the authority, to date, more than 80 percent of the 11.5 km of noise barriers under Phase 1 has been installed, with the remaining works on track for completion this year, noting that design works for Phase 2 are ongoing, with installation works expected to start in the second half of the year.
LTA said that installing railway noise barriers is a complex and laborious process involving extensive retrofitting of existing railway structures. Installation must be done on-site, after passenger service hours and coordinated with other ongoing maintenance and improvement works.
"With the early closures and late openings, longer engineering hours now help the Land Transport Authority’s (LTA) engineers and its contractors to access the train tracks for a longer period of time. This allows them to achieve much more than they previously could have, under a typical regime of three engineering hours per night," it said, citing the example of what would have taken the team three to four nights can now be completed within a typical weekend of extended engineering hours.
"LTA will continue to ride on this momentum to speed up the installation of the noise barriers. More details will be announced in due course," it said.
The authority said that it has also commenced installation works for noise barriers at turnout sections of the rail viaducts, starting with the section at Lakeside MRT station. These turnout noise barriers have a different design from the plainline noise barriers, to better mitigate the noise profile at these locations.
LTa noted that measurements taken at various residential buildings after the noise barriers were installed have shown a noise reduction of at least 5dBA (decibel) from passing trains. When all the railway noise barriers have been installed, residents living near the aboveground MRT tracks can look forward to an improved living environment with noise levels perceptibly reduced.