18.—(1) The infrastructure manager may levy an appropriate charge (“reservation charge”) for capacity that is requested but not used.
(2) Where the infrastructure manager makes provision for a reservation charge to be imposed, that charge—
(a)must provide incentives for efficient use of capacity, and
(b)is mandatory in the case of a regular failure by an applicant to use the paths, or part of the paths, allocated to them.
(3) Where provision for a reservation charge has been made—
(a)the infrastructure manager must publish in its network statement the criteria used to determine the failure to use allocated paths, and
(b)the Office of Rail and Road must control such criteria in accordance with regulations 32 and 34.
(4) The infrastructure manager must provide, at the request of any interested party, information about the infrastructure capacity allocated to applicants.