[AJames]

When I first read this post it reminded me of the story of women who get pulled over by the police. It seemed the best form of "indicating" especially by some brazen woman drivers, was to hitch up the skirt a little by showing a little leg and/or by pulling down their dress fronts a little just to show additional cleavage - thus avoid getting a ticket. Although such ideas might be construed as particularly sexist (they are sexist), the argument was that as in advertising has known all along, sex sells.
The counter-argument to this was that it explained why, particularly young women, were get much less tickets for traffic offences for males of equivalent age. This was assumed as an attempt to reject the atypical notion that women are safer drivers than men.
As to not indicating in traffic lanes or while cornering, isn't this these days just another reflection of selfish egocentric behaviour of our general Society.

"She'll be right mate";

seems now as ;

"She'll be right mate, but it of course wasn't MY fault!"

With the rise of car jacking, road rage etc., it probably shouldn't be surprising that courtesy for others is on the decline. The issue here is more to do with the lack respect for others safety and one another.

Andrew