This is a sad and recurring story.
I am particularly aware of the low sun at this time of the year as I ride a motorbike. If I have the sun behind me on a main road I need be very aware when approaching junctions, because drivers often cannot see me. I ride with the headlight turned on and in a vis vest and sometimes they still cant see me. On both my bike and motorbike I have a flashing Smart light on the back of my vis vest.
If I were to ride that stretch of road in the photo, I would be on the footpath on the left hand side. It looks like a country road and so I doubt if you get much foot traffic on it. Illegal maybe. Safer, certainly.
I see this poor chap had head injuries and was not wearing a helmet. I would suggest that if he is in a collision with a car, a helmet would not have done him a lot of good anyway.
Steve.