Rail safety issues and actions

The ASB rule and procedure for using an alternative route

Issue number: RO-2019-018-SI-01
Issue owner: Sydney Trains
Transport function: Rail: Operations control
Background: Investigation Report RO-2019-018
Issue release date: 20 December 2021
Current issue status: Closed – Adequately addressed
Issue status justification:

Network Rules changes brought in December 2020 prohibit the clearing of the absolute controlled signal immediately protecting the worksite.

Safety issue description

The ASB rule NWT 308 and procedure NPR 703 did not provide sufficient description for the task of using protecting signals for an alternative route. (Safety issue)

Proactive action

Action number: RO-2019-018-NSA-01
Action organisation: Sydney Trains
Action status: Closed

Sydney Trains have introduced changes to the network rules and procedures for Absolute Signal Blocking that prohibit the clearing of the signal immediately protecting the worksite in order to run a train using an alternative route. These changes were introduced in December 2020.

The ATSB considers this safety action as adequate to manage the risk of a signal being cleared and inadvertently allowing a train into a worksite when using an alternative route.

Last update 20 December 2021