Duty to make, review and revise strategic noise maps
7.—(1) No later than 30 June 2007 the competent authority must make and, in accordance with regulation 23, adopt strategic noise maps showing the situation in the preceding calendar year for all—
(a)first round agglomerations;
(b)first round major roads;
(c)first round major railways; and
(d)major airports.
(2) No later than 30 June 2012, and thereafter every five years, the competent authority must make and, in accordance with regulation 23, adopt strategic noise maps showing the situation in the preceding calendar year for all—
(a)agglomerations;
(b)major roads;
(c)major railways; and
(d)major airports.
(3) From time to time, and whenever a major development occurs affecting the existing noise situation, the competent authority must—
(a)review; and
(b)if necessary revise,
any strategic noise map made pursuant to paragraphs (1) or (2) and adopted pursuant to regulation 23.