Noise Abatement Ordinance
(NAO)

¹ The ex­pos­ure lim­it val­ues ap­ply to build­ings with rooms sens­it­ive to noise.

² They also ap­ply:

a.

in yet un­developed build­ing zones in areas where the con­struc­tion of build­ings with rooms sens­it­ive to noise is al­lowed un­der the build­ing and plan­ning le­gis­la­tion;

b.

in the non-de­veloped areas of zones with high­er noise abate­ment re­quire­ments.

³ For areas and build­ings in which, as a rule, people are present either only dur­ing the day or only at night, no ex­pos­ure lim­it val­ues ap­ply at night or dur­ing the day.