Thank you to all of you who have signed this petition so far. I was amazed to log onto the site this morning and find 280 Signatures!
After some consulting with the rockingham city council and some further research. I have been informed that it is the responsibility of "Mainroads Western Australia". The Rockingham City Council has been very helpful and have also insured me that Mainroads are already aware of this intersection and they are developing a suite of counter measures for this locale aimed at improving safety performance of this intersection.
I have forwarded the petition link onto mainroads so they are aware of the growing concern in the community and hopefully this will help push for something to be done sooner rather than later.