Mine has a fold down side visor, but it wasn't big enough, so I extended it with the stiff card from the remains of a large works diary and lots of brown tape.Mr Vosa man asked "what the hell is that?"
Its amazing the advances in trucks but still some basic little things are not addressed . sun from the side side mirrors that stay clear when raining.(mine end up covered when I use the washers) side mirrors that are worse than useless when the sun is behind you..
Honestly I can't remember driving a truck in the last ten years that didn't have a flip or pull down visor on the side windows. What the hell are you driving ?
I use polaroid sunglasses they reduce glare by 90% although they make my sat nav look like its in 3D + my scania has side visors and like the previous said .....seat up