22.—(1) Applicants may submit a request to the infrastructure manager, for an agreement granting rights to use railway infrastructure against a charge as provided for in Part 4.
(2) An applicant wishing to apply for infrastructure capacity must submit an application to the infrastructure manager in accordance with the timetable for the allocation process set out in Schedule 3.
(3) Requests for infrastructure capacity to enable maintenance of the network to be carried out must be submitted in accordance with the timetable set out in Schedule 3.
(4) The infrastructure manager must inform interested parties as soon as possible about the unavailability of infrastructure capacity due to unscheduled maintenance work.