S.L. 549.37 ст. 6Noise indicators and their application.

(1) The competent authority shall apply the noise indicators Lden and Lnight as referred to in First Schedule for the preparation and revision of strategic noise mapping in accordance with regulation 8: Provided that until the use of common assessment methods for the determination of Lden and Lnight is made obligatory, existing national noise indicators and related data may be used by the competent authority for this purpose and should be converted into the indicators mentioned above as long as this data is not more than three years old.

(2) The competent authority may use supplementary noise indicators for special cases such as those listed in paragraph 3 of First Schedule.

(3) For acoustical planning and noise zoning, the competent authority may use other noise indicators than Lden and Lnight.