Out in the sticks in a hard rain before sunrise this morning. One car was approaching me over a long slow rise in the road - which caused his (dimmed) headlights to be hard in my vision for a lengthy period!
The wet road, the center and shoulder lines - all disappeared.
A small portion of the white fog-line is visible right next to my scooter thanks to the glow of the LIKE's little 5W amber running light.
I guided on that little patch of amber light!
Those two little running lights are surprisingly bright on a pitch dark night!
Stig
also, I've lost a good % of my left eye's vision over the past few yrs