Noise Abatement Ordinance
(NAO)

¹ Noise emit­ted from mo­tor­ised vehicles, air­craft, wa­ter craft and rail­ways must be re­duced as far as pos­sible by tech­nic­al and op­er­a­tion­al means, and to the ex­tent that this is eco­nom­ic­ally ac­cept­able.

² Emis­sion lim­it­a­tion meas­ures are gov­erned by the le­gis­la­tion on road traffic, civil avi­ation, in­land nav­ig­a­tion or the rail­ways, provided the vehicle con­cerned is covered by one of these cat­egor­ies of le­gis­la­tion.

³ Emis­sion lim­it­a­tion meas­ures for oth­er vehicles is gov­erned by the pro­vi­sions on mo­bile ap­pli­ances and ma­chines.