Noise Abatement Ordinance
(NAO)

¹ The Fed­er­al Of­fice for the En­vir­on­ment shall en­quire reg­u­larly of the en­force­ment au­thor­it­ies as to the status of the im­prove­ments and the noise pro­tec­tion meas­ures, in par­tic­u­lar con­cern­ing roads, rail­way in­stall­a­tions, aero­dromes, shoot­ing ranges and mil­it­ary shoot­ing ranges and train­ing areas.

² For roads, the en­force­ment au­thor­it­ies must provide the fol­low­ing doc­u­ments in par­tic­u­lar by 31 March each year:

a sum­mary of:

1.

the roads or sec­tions of road re­quir­ing im­prove­ments,

2.

the time frame with­in which these roads and sec­tions of road will be im­proved,

3.

the total costs of these im­prove­ments and noise pro­tec­tion meas­ures, and

4.

the num­ber of per­sons ex­posed to noise levels above the im­pact thresholds and alarm val­ues;

b.

a re­port on:

1.

the im­prove­ments made to roads and sec­tions of road, and the sound­proof­ing meas­ures im­ple­men­ted in the pre­vi­ous year, and

2.

the ef­fect­ive­ness and the costs of these im­prove­ments and noise pro­tec­tion meas­ures.

³ For na­tion­al roads, it shall ob­tain the in­form­a­tion un­der Para­graph 2 from the Fed­er­al Roads Of­fice. For trunk roads and oth­er roads it shall ob­tain this in­form­a­tion from the can­tons. The in­form­a­tion must be sub­mit­ted in ac­cord­ance with the re­quire­ments of the Fed­er­al Of­fice for the En­vir­on­ment.

⁴ The Fed­er­al Of­fice for the En­vir­on­ment shall as­sess the in­form­a­tion in par­tic­u­lar in re­la­tion to the pro­gress made with im­prove­ments and the costs and ef­fect­ive­ness of the meas­ures. It shall in­form the en­force­ment au­thor­it­ies of the res­ults and pub­lishes them.