I'm just getting into this aviation,and unlike any other discipline I've been involved in none of the 'Rules' ever seem to be appropriate to the situation and pilots seem to go out of their way to do the opposite.
UKANO collision avoidance in the air Rule 8,when approaching head on,each must turn to the right.
Given the scenario of direct head on confirmed by range closing,bearing not changing, why should anyone contemplate a left turn,as bookworm has suggested ? No, seriously, tell me, there is probably a good reason which my superficial approach has missed.!
In the last 6 months albeit flying in an uncongested part of the uk (not saying where as it would then become the most congested)

I have never seen the 'strobe' of other 'craft.
This bit of equipment needs serious re-engineering to become effective. In other environments strobes are used for collision avoidance,drawing attention to alarm states etc. very effectively,but the aviation variety needs an order of magnitude upgrade to be useful. Perhaps if feasible this would be a cheap, simple, universally applicable and effective way of improving see and be seen.
atceng