At the risk of boring everyone to death...

I've got to write about the school run again. All easy-peasy today. Nice tandem run, not too late. Dropped girl off, toodled down to the end of the road, where there is a cycle exit, but a dead end for cars, only to encounter stupid posh car reversing at me again.  (I'm pretty sure this is the same guy who has twice reversed in the street before noticing us behind him on a bike).

I don't know who has priority in this instance. He is doing a U-turn, I am aiming for the red bit that gives me access to Viewforth. Maybe I should have stopped.  In the event, I did stop, but also went and asked the driver if he'd noticed me. He claimed he did.  I asked why he kept reversing if he'd seen me. Clearly we were not seeing eye to eye.

As I cycled off, muttering angrily to myself, I realised that what I really wanted to ask was why did he drive down there at all?  There is no need for him to make a U-turn there unless he is a resident or visiting someone there. Students should be being dropped back here somewhere, where there is a nice easy right turn out to the main road. The only reason he is driving down there at all is because he feels the need to drop his child exactly at the gate, so the primary aged child doesn't need to walk 10 extra steps.

How do I point this out?  Is there some way of engaging with this politely?  I've probably already blown my chances of this.  So, how do I raise this in a way that actually gets something done about it?