Back in my hostile youth, when tailgated by some moron with their high beams on , I would adjust my inside mirror to reflect their light back at them .
They are often worse than cars in my experience. They are mounted up high so they hit you in the eye full on, and some of them are very bright. They are often set to flash as well, which makes matters even worse as your eyes can't adjust to a bright or a dark environment. How a bicyclist can think that blinding the 4,000 pound vehicle driver coming at them makes them safer is beyond me......same is happening with bicycle lights!
In my youth, I would flash my reverse lights when being high-beam tailgated. I had a manual transmission car that would turn on the reverse lights before you engaged reverse. I don't remembering it doing much, however.Back in my hostile youth, when tailgated by some moron with their high beams on , I would adjust my inside mirror to reflect their light back at them .