Yep, it's meant to break up the stream of vehicles trying to enter the freeway. Some areas of Melbourne have 3 lanes at an on ramp ..and over time some just ignore it....if there is one area a red light camera should be installed it's here...it is a good place to legally do a 0-100kmph...with due safety of course.
https://www.vicroads.vic.gov.au/traf...p-signals-faqs