When you come around a curve near sunrise or sunset, you may suddenly encounter visual input that overwhelms your sensors. The sun is blinding you. It might overwhelm infrared sensors, too.
If you have alternate sensors, you should trust them them more, and camera systems less.
If you have a sunshade, you should deploy that.
If it is raining, or partially cloudy, the situation may change rapidly.
And perhaps you should slow down, but if you slow down too fast, other vehicles might not be able to avoid you.
