The example you've given is likely not a problem with reading comprehension but obliviousness. I read and understand things very well (I have to read and correct engineering drawings and schematics and implement them), but I simply don't notice a lot of what goes on around me.
My suggestion for that is any job that doesn't require safety, physical team labor, or security.
My father is barely literate and has been a trucker for over 30 years.