I think Stella is right on the money there?
In most daytime accidents it's not about visibility per se, it's about people not realising how fast or from what direction you're coming.
Because of this I totally support Stella's view that it's about evasive riding and road craft rather than visibility.
I've been riding for a very long time and am also a keen motorcyclist, one thing I've come to recognise is that if you're involved in a collision you stand a very high risk of getting hurt....whether it be your fault or the car drivers. It's not a game of blame, or who was in the right or wrong of fitting super visibility additions etc.
A best solution by far is to not put yourself in a situation where a collision could occur in the first place.
You see the car driver look, then check the other way, then look again and you can tell they're going to pull out even though they've seen you, they just plain old miscalculated your speed or just plain don't give a damn.
I have a 12 year old who rides a few miles into school every day come rain or shine summer or winter. I've tried to teach him to ride evasively and not let yourself get into a situation in the first place rather than put yourself at the risk of the ignorance of motorists.
Ride fast so as to go with the flow of traffic, ride way out from the gutter so it forces people to think rather than squeeze past and first and foremostly,.........never ever trust anybody in a car!!
It's all about confidence, education and practice....don't be a victim of poor driving, get right out there and give em hell...lol.