Paragraph 4

the arrangements which the infrastructure controller has made for requiring an operator of trains on railway infrastructure under the control of that controller or an operator of a station served by such infrastructure to comply with his reasonable requests as respects any aspect of the operation which affects or is likely to affect the performance of the health and safety duties of the controller;

the nature and circumstances of the requests which may be made; and

the steps he intends to take where a request referred to in sub-paragraph (a) above is not complied with.