The network’s track geometry standard did not include any specific requirement to limit a localised lateral angular discontinuity in rail line at a mechanical joint.
The safety action taken by MTM in combination with other actions pertaining to track maintenance should reduce risk associated with the safety issue.
Metro Trains Melbourne (MTM) has revised its track fault management system to include specific guidance on the risk of fault clusters and wheel-climb risks. The revised procedures address the identification and removal of misaligned fishplated joints.