(1) To ensure the safety or operability of the rail network, the Minister, by order, may declare a planning corridor in respect of any part of the rail network.(2) In determining the width of the planning corridor the Minister may have regard to (a) any standards; and(b) any accreditations, plans or other matters in place under the Rail Safety Act 1997 ; and(c) any other matters the Minister considers relevant.(3) The Minister may revoke an order under subsection (1) at any time and must do so without delay if he or she becomes aware that (a) in the case of an order in respect of existing rail network, the rail network has been permanently dismantled or has ceased permanently to be operational; and(b) in the case of an order for a proposed extension of the rail network, the extension is not going to be constructed or made operational.