That's it... I give up!

[Grahamm]

I read somewhere --- or dreamt it or am making it up, but because the yellow high viz is so common it gets "dialed out by the brain" as normal in the environment , but if you have a pink high vis the brain reconciles that as different and so registers it and gets seen better

A couple of years ago I was riding whilst on holiday in Devon and a guy was wearing green hi-viz jacket and trousers whilst pruning a hedge on the side of the road.

It wasn't until he moved that I actually saw him because it was acting as camo!