The enforcement authorities set the time limits for implementing improvements and soundproofing measures according to their urgency.
In assessing urgency, the following factors are decisive:
the extent to which the impact thresholds are exceeded;
the number of persons affected by the noise;
the cost-benefit relationship.
The improvements and soundproofing measures must be completed within 15 years of this Ordinance coming into force.
The time limit (para. 3) for improvements and soundproofing measures on roads are extended:
The improvements and soundproofing measures must be completed:
at military aerodromes by 31 July 2020;
at civil aerodromes that are used by heavy aircraft by 31 May 2016;
at civil shooting ranges that require compulsory improvements as a result of the Amendment of 23 August 200615 of Annex 7: by 1 November 2016;
at military firing ranges and training grounds: by 31 July 2025.16