krull wrote:A neighbour of mine was run down by a truck while driving towards a low setting sun.
The problem there was the low setting sun. I doubt a bit of pastic and foam will make much difference when hit by several tons of truck.
I deal with riding into a low setting sun by avoiding it. On tour I might start early or late. On rare occassions with little choice I have been watching my mirror and been ready to ride off the road to avoid being hit.
On this day on tour I set off early into a rising sun to avoid extreme heat later. But there was little traffic, a smooth wide shoulder, and I still watched overtaking traffic in my mirror.
Surviving being hit by a truck while going into low sun is not a reason to wear a helmet.