Regulation 23 Interoperability constituents: duties on operators
The operator of any interoperability constituent that is in use on, or is part of, a rail network scheme, shall ensure that while it is so in use it is—
(a)
correctly installed for the purpose for which it is intended to be used;
(b)
not used for any purpose other than the purpose for which it was designed; and
(c)
maintained in an efficient state, effective working order and good repair.