Is it legal by DOT to use those sun blockers on your driver side window?

I've got your answer right here:

 

Not enough.

You're not alone.

Trucker accumulates skin damage on left side of his face after 28 years on the road

 

I bet Indiana would have a problem with it .

 

Never thought of it. You got half burnt then finish your work and burnt the other side coming home. He he.

It's not that funny, I had a day in the area of Lake Havastu crossing the Sonora that was particular sunny. When I got into California I did not appear that good. Took about a week to get rid of the damage.

 

Yup. Often the prescription glasses that automatically darken to become weak-ash sunglasses won't darken inside the truck because UV is blocked by the glass.

 

Lol!

 

Are you talking about one that sticks to the window? I’ve always used the visor to block the sun from the side of my face.

Those watermarks can be removed with some rubbing alcohol on a cloth. A friend of my was complaining about those in his truck, and 10 minutes later I had them all erased.

 

Yes the one that sticks on with the suction cups. They are used as baby sun shields in the back of soccer mom's windows

 

Just do like some guys I see... usually one or two per day.
They pull their privacy curtains forward about 90% covering the entire window.
I don't see how it's possible for them to even see their mirror even if the lean forward.
The only reason I can think of for doing this is to hide the view of them hittin' that speed bulb.

 

Or playing with the phone.