All around Vic, too. They generally don't even put in a bike lane, just say "use the emergency lane". Here's a sequence of images for one on the freeway in to Melbourne from Ballarat, starting from the onramp:
This whole stretch of freeway is 110 km/h (70mph). There are skid marks where vehicles have bailed out of a failing 110km/h merge.
The shoulder is the emergency lane. It's where drivers pull over into if there's an unavoidable hazard ahead or their brakes are failing or something.