First came accross that sort of thing in Spain in 1970 but of course it was the otherway around as well and, not having experienced this sort of thing before, completly ingnored it and turned left as normal, to the frustration of the locals I felt.
I next came accross this system in Townsville or was Cairns, I can't remember which, five years ago but as I wasn't driving it didn't really bother me.
Hope to back in oz in a couple of years at the latest.
LB