The ones that divide lanes of same direction and opposite direction traffic. Ideally on the verge-edge side of A-roads too to sort of tell you where road ends & verge might begin. I know it's not just me, my young adult sons say they also can't see the damn lines. There are so many stretches of road where the white lines have faded or are long overdue repainting. Today I had glare in my eyes too, and was driving across a huge junction trying to find my lane on other side... I veered into the lane to my right a little because my guess was off & literally any lane lines there were super faded on top of the road glare ... this was on a 3 lane wide carriageway. Eeek.
Would anyone like to commiserate?