This document is to provide a framework to assess the optimal sighting arrangements in order to minimise risks as a consequence of poor sighting on the railway network.

The documentation may be used to facilitate the optimisation of sighting and perception-reaction which are considered important safety factors in the mitigation of railway safety risks associated with:

  1. the occurrence of an exceedance of authority from incorrectly placed signs
  2. the occurrence of reading the incorrect sign, for example read-through and read-across errors
  3. railway and contract personnel working in the rail corridor
  4. authorised visitors to the corridor
  5. machinery and plant being used on the corridor.

While this standard was developed for AS 7631 compliance, the process can be used for compliance with any standards.

If applied as intended, the framework provided in this Standard will affect the implementation of the appropriate mitigation measures to overcome or minimise the safety risks associated with poor sighting arrangements; thereby increasing safety of operations and people.