Telstra reduces traffic light delays

Telstra reduces traffic light delays

Summary: Telstra has almost finished enabling the migration of more than 8000 traffic lights onto its Next IP communications network.


update Telstra has almost finished enabling the migration of more than 8000 traffic lights onto its Next IP communications network.

Traffic Light Tree

(Traffic Light Tree image by William Warby, CC2.0)

The communication links for more than 8000 traffic light controller boxes across the nation began their migration to DSL and PSTN technology in April last year, according to director of IP and integrated data solutions at Telstra, John Ieraci. The last stage of the deployment was about to commence in the Northern Territory, he said, which would entail upgrading around 100 traffic systems controllers.

Ieraci said that Telstra funded the core network upgrade portion, while the state and territory traffic authorities funded their own network equipment and resource costs.

There was no indication of how much the entire upgrade would cost "as it was a blend of new customer premises equipment and man hours", he said.

Ieraci later clarified that there were upfront costs for moving the traffic system from the legacy communication network to the new system. However, an offer it had for the road authorities had enabled it to remove "the majority" of the upfront capital cost incurred by them.

Prior to the upgrade, all services used a legacy product called PAPL (Permanent Access Private Line), an analog product operating over copper.

"Running the service over Telstra's Next IP network means access services can be monitored and performance trends observed in real time," Ieraci said. "In the event of a network outage, the customer has the ability to remotely diagnose and pinpoint a fault. This can result in less truck rolls and faster service restoration."

The migration of the traffic systems ensured that alarms would continue to be provided back to control centres if traffic lights malfunctioned.

Topics: Telcos, Broadband, Enterprise Software, Telstra

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  • 2 zombies on every corner

    One thing that jumps to mind is "When will the traffic lights become zombie botnets"?

    They are always on, and with them connecting via DSL, I suspect that they will be targeted soon...
  • lol @ Zombies

    DSL != internet.. Unlikely to be an outbreak on a private IP network.

    Perhaps you can find out a service number and churn your local intersection to TPG?
  • DSL at traffic lights can stop truck rolls?

    Haha.. may not be the best use of the term "truck rolls" when talking about traffic intersections! I think in this case it could have a more literal meaning!
  • Truck rolls

    Ieraci so meant that as a pun, I reckon.
  • Less Truck rolls

    It means being able to remotely fix an issue or better identify the cause of an issue. This results in less technicians required to drive to the site to identify and fix faults.
  • *** PLEASE NOTE ***

    This article is factually untrue, and a formal Telstra retraction was requested at 6:30pm today.

    If ZDNet wishes to contact me personally to clarify the situation, I will happily respond via my registered account email and/or via phone.

    In the meantime, I would direct readers to to develop an understanding of how traffic lights are actually managed in Australia.
  • Thank you, bsteco! We're checking into the situation and will post developments here soon! -Brian Haverty, Editorial Director,
  • has incorporated information from a source within the traffic authorities (who wishes to remain anonymous)in this update of the article. Suzanne Tindal, News Editor,