Yes, Bill. I expect I've said this before but in my commuting by bicycle days (17 miles of old railway, nowhere near a road and very dark at 6am) I often came across fellow cyclists with either/both super bright, flashing rear lights or super bright front lights they didn't cover with a hand as is the universally polite act of any decent cyclist.

There is no need for any rear light on the path, even in complete darkness (Dec to Feb) you can't overhaul a fellow cyclist fast enough not to notice them. The flashing rear lights are literally a pain in the eyes if within 500yards in the darkness.

The rude failure to cover a front light was enjoyably dealt with by turning my own bike into a Q-bike - like a Q-ship used to lure U-boats to the surface for an apparently easy kill only to find the freighter was a disguised gunship which would sink the U-boat. My version involved getting a very, very bright light alongside my standard pretty dull one. If the oncoming moron didn't respond to my dull light being flashed (by me covering and uncovering with my hand to make the point I was being blinded) then I deployed the super-beam with immense satisfaction. I am Travis, you see. One unfortunate rudely lit person did swear a lot and head off into a ditch. I'm sorry to say I really enjoyed that moment... road rage a mile from the nearest road at 6am in the dark with no other souls around.

The latest lighting irritating my life is running based. I love cross country and trail runs. Even better in the dark. But the new super-reflective running shirts mean the runner in front blinds you with the reflection of your own head torch. Even worse, runners now have flashing rear lights, like cyclists. Fine on the road but on a wet, muddy, woody trail there is no need at all for any rear light. I haven't worked out a Travis plan for these yet but I'm thinking about it! Perhaps I could wear my own very bright head torch backwards and overtake them for fun...

Illumination rage: it's me!!