DIRN definition
Examples of DIRN in a sentence
While recognising that the ATSB’s main concern will be with Immediately Reportable Matters on the DIRN, where it appears that both the ATSB and OTSI are interested in conducting an investigation into a rail safety occurrence, the ATSB will resolve the matter separately with OTSI.
The ATSB is resourced each year to undertake a finite number of more complex and medium complexity rail investigations on the Defined Interstate Rail Network (DIRN).