(1) Section 217(4)--
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'(4) If the rail safety officer reasonably believes it necessary for the purposes of the investigation, the rail safety officer may require a person to--
(a) answer questions relevant to the incident; or
(b) produce documents or other things relevant to the incident.'.
(2) Section 217(10)--
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'(9A) It is not a reasonable excuse for a person to fail to comply with the requirement that complying with the requirement might tend to incriminate the person or make the person liable to a penalty.
'(9B) Subsection (9C) applies to the following (primary evidence)--
(a) any help given by an individual to a rail safety officer in investigating an incident in response to a requirement under subsection (2);
(b) any answer given by an individual to a question mentioned in subsection (4)(a) to a rail safety officer in investigating an incident in response to a requirement under subsection (4)(a);
(c) a document or other thing mentioned in subsection (4)(b) produced by an individual to a rail safety officer in investigating an incident, and the fact of that production, in response to a requirement under subsection (4)(b);
(d) the results of an alcohol test, drug test or medical examination of an individual mentioned in subsection (5).
'(9C) The following is not admissible in evidence against an individual in any civil or criminal proceeding--
(a) primary evidence;
(b) any information, or document or other thing, obtained as a direct or indirect result of primary evidence (derived evidence).
'(9D) Subsection (9C) does not prevent primary evidence or derived evidence being admitted in evidence in criminal proceedings about the falsity or misleading nature of the primary evidence.
'(10) When making a requirement of an individual under this section, a rail safety officer must--
(a) warn the individual it is an offence to fail to comply with the requirement unless the individual has a reasonable excuse; and
(b) advise the individual that--
(i) it is not a reasonable excuse that complying with the requirement might tend to incriminate the individual or make the individual liable to a penalty; and
(ii) anything obtained under the requirement, and any evidence derived directly or indirectly from anything obtained under the requirement, is not admissible in evidence against the individual in any civil or criminal proceeding.'.