I used the "new" southern expressway on Monday. It was 9:30 and it was really quick through to Flinders.
I then went through to the city and picked up the expressway on the way back at 2 which was usually a time that it was closed! It was free flowing and perfect.
The holdups seem to be peak time caused by the Darlington issues which are next on the agenda to be fixed.
I used it the other evening from Lonsdale to Old Noarlunga and it was a pleasure compared to getting stuck on Main South.
Transport in the south has been a nightmare for 18 months due to the decision to electrify the train line AND duplicate the expressway at the same time. Thankfully both are now completed.
I have a surgeon staying with me and the travel from Port Noarlunga to Flinders hospital is now around 16 minutes both ways.