See the article in the April Newsletter entitled “Outback Wave Protocol”.
Newsletter reader Janet advises that in the 1970s, the Wave used to be common when driving between Sydney and Adelaide — which is scarcely the Outback. No doubt the traffic was lighter in those days, and the pace of life in general allowed more attention to pleasantries and acknowledgement of one’s fellow travellers.
I look forward to more feedback on this subject. I’m particularly interested to hear from any overseas readers as to whether there is any equivalent of the Outback Wave in other countries.