THE City of Mandurah will support the installation of curve advanced warnings for a section of Estuary Drive, Dawesville following a double fatality in 2016.
The council is supporting using signs, guide posts and curve alignment markers to identify a curve in the road where a car hit a roadside tree, killing both occupants.
As the road is under the care, control and management of the council, Main Roads WA has forwarded a copy of its findings to the council for its consideration and implementation of remedial measures.
According to the Main Roads WA report, the vehicle involved in the accident failed to negotiate a slight right hand curve in a 50kph section of Estuary Road, continued in a straight line, crossed to the wrong side of the road and struck the tree less than one metre from the edge of the road.
Council officers considered a number of options – protecting the tree with a properly designed crash barrier system, absorbing any impact, removing the tree or modifying the road alignment.
Although environmentally undesirable, council officers said removing the healthy tree, worth $75,000 and an asset to the community, would not reduce the risk of inappropriate driver behaviour or vehicles leaving the road at the location.
Roads like Estuary Road in semi-rural environments would inevitably have a high abundance of trees adjacent to the road alignment.
Removing the tree was the least preferred option and the cost of modifying the road alignment substantial.