(1) A regional public transport plan adopted under section 9—
(a) must, at all times, be kept current for a period of not less than 3 years in advance, but not more than 10 years in advance; and
(b) may be reviewed by the regional council from time to time, but must be reviewed and, if necessary, renewed or varied at the same time as, or as soon as practicable after, a GPS, relevant regional land transport strategy, regional land transport programme, or long-term council community plan is prepared and issued, approved, adopted, varied, or amended (as appropriate).
(2) The purpose of a review of a regional public transport plan is to consider whether the plan will continue to give effect to the public transport service components of the relevant regional land transport strategy, properly takes into account the GPS and the public transport funding likely to be available, and meets the needs of the community.
(3) If the regional council is—
(a) reasonably satisfied that the plan does the things specified in subsection (2), it must give public notice of that decision:
(b) not reasonably satisfied that the plan does the things specified in subsection (2), it must vary or renew the plan in accordance with this Act.
(4) Subject to subsections (6) and (7), the provisions of this Act that apply to the adoption of a regional public transport plan (including sections 19 and 20) apply with the necessary modifications to a variation or renewal of a regional public transport plan.
(5) A variation forms part of the regional public transport plan it varies.
(6) Section 20(1) and (2) do not apply in respect of a proposed variation to a regional public transport plan if the variation is not significant, in which case,—
(a) consultation must be carried out in accordance with the consultation principles in section 82 of the Local Government Act 2002; and
(b) for the purposes of that section, the persons who will or may be affected by, or have an interest in, the proposed variation include public transport operators and those persons who have notified the regional council of a proposal to operate a commercial public transport service in the region.
(7) Subsection (6) does not apply to a variation that would—
(a) include or amend a control in a regional public transport plan; or
(b) include or amend a contracting requirement in a regional public transport plan; or
(c) alter the policy that the regional council applies in determining whether a proposed variation to a regional public transport plan is significant.
(8) A regional council may, by resolution publicly notified, correct minor errors in a regional public transport plan but only if the correction does not affect an existing right, interest, or duty of any person or organisation that is affected by or has an interest in the regional public transport plan.