(1) A special area declaration comes into operation at the time and date specified in the declaration.
(2) Unless earlier revoked under section 20E, the declaration ceases to operate at the time and date specified in it.
(3) The period the declaration operates must not exceed 28 days.
(4) However, a further declaration may be made for the same site or area to extend the period of operation of an earlier declaration.
(5) The period the further declaration operates must not exceed 7 days.
(6) The provisions of this Part relating to a special area declaration (except subsection (3)) apply to a further declaration.