If a motorist has poor powers of observation, you're in trouble, hi-viz or not hi-viz. True.
But, equally, while I'm not going to be talked into wearing hi-viz when I think it's unnecessary, no more am I going to be talked out of wearing hi-viz when I think it helps. In dark or poor light situations when I'm driving - well, I've up till now (thankfully) always seen a cyclist in good enough time to avoid hitting them. Even the dark-clad, unlit, ninja types - yes they do show up in one's headlights - eventually. But a cyclist with reflective clothing and good lights, shows up that few seconds earlier. Gives me more time to plan my manouevre past that cyclist, assuming I'm going to overtake. That makes it less stressful for me, the motorist. If it's less stressful for me, it's less stressful for other drivers. And the less stressed-out motorist is less likely to have an accident further down the road - and less likely to get involved in road rage either.
So my yellow jacket will continue to find its use. On my ample chest and behind. At least until the clocks go forward. I would be happy if other cyclists did the same, though I'm not about to lecture them.
I also don't find it comfortable reading all the disparagement of hi-viz that's appeared on this thread. But that's what forums are about, I suppose.
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