THE ability of local motorists could be put to the test with new “duck and dive” roundabouts likely as part of upgrades along Armadale Road in Jandakot.
Two grade separated roundabouts, “a first for WA”, are proposed to be installed where Armadale Road meets Solomon Road and further east where Armadale Road meets Tapper Road.
In a report to City of Cockburn councillors, strategic planning manager Andrew Trosic said the roundabouts involve “traffic movement happening in a trench-like expressway, with turning traffic happening via an elevated roundabout-type structure”.
He said it would be important to educate drivers on the use of the roundabout, especially those approaching from Solomon Road southbound intending to enter the freeway via the new North Lake Road interchange.
“Such drivers will need to spiral the roundabout twice in order to move from the inner circle to the outer circle,” he said.
A similar roundabout will be built about 450m east at the intersection of Armadale Road and Tapper Road, with Mr Trosic’s report highlighting the need for driver education there as well “due to the use of a roundabout spiral”.
Mr Trosic told the Gazette he was confident drivers would be fine.
“The proposed grade separated roundabout is essentially just like any other dual lane roundabout. People will understand how to use it correctly through appropriate lane markings and signage that will be installed as part of the road works,” he said.
The road works along Armadale Road will be done as part of the $237 million flyover project, which will link Armadale Road and North Lake Road via a bridge over the Kwinana Freeway.
In a statement, a spokeswoman for Main Roads WA said the project would offer major improvements to the area.
“It will improve access to Kwinana Freeway to and from the north and support ongoing residential and commercial expansion in Cockburn and Armadale,” she said.
The spokeswoman said the project was in the planning and development stage to determine the most appropriate route, alignment and design.
Contracts are not expected to be awarded until November 2018, with a start on the build in early 2019.