A few times a week I make a left hand turn out of a side-street into a divided road. Frequently there is someone in the divided road doing a U-turn against me. And an alarming amount of the time, they fail to give way. I’ve got deliberately cautious now, it happens so much, seemingly particularly when that other vehicle is a 4WD.
The rule is clear. If you’re doing a U-turn, you give way to everybody. EVERYBODY. Even little-ol’-me, who is facing a stop sign.
The other day, ironically, it was someone with a personalised licence plate: SMARTY. Not very Smarty if you have a prang failing to give way.