SHB electronic lane control system testing

6 June 2014

The new state of the art Sydney Harbour Bridge electronic lane control system has been installed with testing scheduled to be carried out in June and July.

A Roads and Maritime Services spokesperson said the Australian designed $12.5 million system uses real time traffic conditions to control the division of north bound and south bound lanes and reports back to the Transport Management Centre (TMC) so any changes in the network can be communicated to motorists.

“Roads and Maritime Services has upgraded the system to accommodate future traffic patterns on the Sydney Harbour Bridge,” the spokesperson said.

“This will allow changes to traffic to be reacted to more efficiently, to ease congestion more quickly in the event of an incident.

“The hardware for the previous system was first installed in the 1980s with the software upgraded in the 90s. To meet traffic demand we needed to ensure we were operating with the best technology available.

“Roads and Maritime led the design of the new system which uses German componentry and programmable logic controller operating on two new fibre optic networks with dual redundant servers.

“The back up network and servers provide important support systems in the event that the main communications connection is severed,” the spokesperson said.

 All permutations of the new system would be tested thoroughly before it is launched.

“We will be testing the new controls, including movable medians, lights and signs, one lane at a time in order to minimise the impact to motorists.”

Testing of the new system will be carried out from10 June until mid-July, weather permitting.

 The work will be carried out between the Western Distributor on-ramp and Ernest Street on weekdays and weekends from 10pm to 5am, weather permitting.

Motorists may experience minor delays due to changed traffic conditions including partial lane closures to ensure the safety of road users and workers. Motorists should allow extra travel time and follow all signs.

 For the latest traffic information, visit, download Live Traffic App or call the Transport Management Centre on 132 701.

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