Smart Freeways in Perth

With the introduction on the Mitchell smart Fwy southbound, will we see other smart freeway projects pop up around Perth? Is it that useful?

Would they add the smart freeway project onto Roe Hwy or Tonkin Hwy? Mitchell Fwy NB or Kwinana Fwy SB?

also, on the Mitchell smart fwy, but when do the new traffic lights on all the on ramps work? I haven’t seen them on yet