While travellers are being told to find another way to get home, buses and ferries are now also packed with locals forced off the trains.
“At 2.45pm we were notified the Digital Train Radio System (DTRS) had failed on the Sydney Trains network,” a spokesperson said.
“This is the digital radio system that connects the train crew with the signaller and our Rail Operations Centre.
“As a result, for safety reasons we have had to halt trains at platforms until we can reboot the system.
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“We have managed to move all trains to platforms and there are no people trapped on trains.
“People were able to safely get off trains.
“Engineers are on site and looking at the system fault and determining if we implement a back-up system located at Homebush.
“We are advising people to avoid train travel now and we will update when the system is back up and running.”