While still being the most environmentally friendly means of transport, the railway is also a source of noise in everyday life. The rolling of the wheels on the tracks, the driving noise of engines and fans are often perceived as stressful by residents.
Highly absorbent track side walls are often the only way to noticeably reduce noise emission. These walls almost completely avoid sound reflection and in contrast to other systems, they do not require much space.
Noise barriers by Bongard & Lind are made of aluminium and meet the special requirements of high-speed railway lines which besides sophisticated acoustic properties also have to meet specific civil engineering requirements.