Here is another photo:
https://www.reviewjournal.com/local/...truck-2212306/
I think this was the location of the crash. There appears to be a long sweeping curve on approach to the crash site. So visibility was likely reduced somewhat.
https://www.google.com/maps/@35.6594...7i16384!8i8192
The morning sun should be from the southeast. The visor appears to be down in the truck, but he sun shouldn't be that low after 9 AM.