Sch 4 para 18
As regards the capacity restrictions of a duration of more than 30 consecutive days and affecting more than 50% of the estimated traffic volume on a railway line, the infrastructure manager must establish criteria for which trains of each type of service should be re-routed, taking into account the applicant’s commercial and operational constraints, unless those operational constraints result from managerial or organisational decisions of the applicant, and without prejudice to the aim of reducing costs of the infrastructure manager in accordance with regulation 15(7). The infrastructure manager must publish in the network statement those criteria together with a preliminary allocation of the remaining capacity to the different types of train services when it acts in accordance with paragraph 9. After the end of the consultation and without prejudice to the obligations of the infrastructure manager in accordance with regulation 13(4)(g) and (h) the infrastructure manager, based on the feed-back it received from the applicants, must provide the railway undertakings concerned with an indicative break-down by type of service of the remaining capacity.