Noise barriers and sound-insulating windows
As part of the railway noise abatement programme, around 276 km of noise barriers were constructed, and more than 70,000 sound-insulating windows installed. Noise barriers were primarily installed along routes with high volumes of rail traffic, particularly where large numbers of goods trains also travel at night. The priority routes for this remediation were the north-south transit axes via the Gotthard and Lötschberg.
Where the remediation of rolling stock and noise barriers do not offer sufficient protection from excessive railway noise, the law provides for noise protection measures on buildings in the form of sound-insulating windows. On behalf of the Confederation, the cantons take care of implementation. In fulfilling the requirements, the Confederation took on 50% of the installation costs and the costs of project planning; deciding whether to install them was still left up to the building owners. Where noise pollution was above alarm value, the building owner was obliged to install windows, and the Confederation took on the whole costs.
Measures on buildings in noise-sensitive areas that were newly built, converted or renovated by the owners after the noise abatement programme finished, are not entitled to co-financing from this programme.