5—Amendment of section 4—Interpretation
(1) Section 4, definition of "pricing principles"—delete the definition and substitute:
"pricing principles"—
(a) relating to the fixing of floor and ceiling prices—see section 27;
(b) relating to the price of access to a railway service—see section 38(2);
(2) Section 4, definition of "railway infrastructure —delete the definition and substitute:
"railway infrastructure" means—
(a) fixed railway infrastructure; and
(b) other installations, plant and equipment (whether fixed or moveable) used or available for use in connection with the operation of the railway network to the extent that it is brought within the ambit of this Act by proclamation,
but does not include a private siding within the meaning of the Rail Safety Act 2007 , other than a private siding prescribed by the regulations to be railway infrastructure for the purposes of this Act;