(a) until the end of the period of 12 months that next succeeds its date of issue; or
(b) as provided by subregulation (2).
(2) If application is made for a new certificate of suitability before, but not more than 1 month before, the date that is 12 months after the date of issue of its predecessor but is not finally dealt with before that later date, the previous certificate continues in force until the new certificate is issued or the application is refused.
(3) The date of issue of a new certificate of suitability shall be considered to be the date that is 12 months after the date of issue of its predecessor (even if it is issued before or after that later date) and the new certificate shall be dated accordingly.
(4) If a weighbridge is re-located, its certificate of suitability ceases to have effect.