LRT Kelana Jaya Line disruption due to Automatic Train Control (ATC) electronics malfunction –

Rapid KL has released information on what happened during last night’s LRT Kelana Jaya Line disruption that caused services to be halted prematurely.

According to the statement, an issue with the Automatic Train Control (ATC) system electronics had a malfunction on Saturday (November 5) morning, but a reset on the component seemed to fix the issue.

After midnight, a software update on the ATC system was performed and after the system was tested, they found that it was stable so normal operations continued on Sunday (November 6). However, malfunctions continued to occur at 10:38am and 8:39pm on Monday (November 7).

After train service was halted, Rapid KL worked with the Canadian OEM supplier Thales Group to investigate the root cause of the issues. As of 5:30am today, the technical team managed to stabilise the ATC system but are currently observing to see if any further issues occur.

The full timeline of what happened can be found below.

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