Section 21 (2) of the Transport Safety Investigation Act
2003 (TSI Act) empowers the Australian Transport Safety Bureau
(ATSB) to discontinue an investigation into a transport safety
matter at any time. Section 21 (3) of the TSI Act requires the ATSB
to publish a statement setting out the reasons for discontinuing an
investigation.
On 13 December 2010, the ATSB commenced a safety issue
Investigation into Procedures and Practices used to Provide Access
to Track, NSW. Examination of the information collected
during the Access to Track investigation identified significant
similarities to aspects of other occurrences being investigated by
the ATSB as part of the safety issue investigation of rail
operations on the interstate rail line between Sydney and
Melbourne, which commenced on 16 August 2011.
Accordingly the ATSB decided to examine the issues related to
Access to Track as part of the broader RI-2011-015 safety issue
investigation and the separate RI-2010-014 investigation was
discontinued.