Windshield regulations are also done at the state level.

I’m not really interested in getting into a giant pedantic argument about the specific crack conditions you can and can’t drive with. It’s not really even the point nor is it what I stated (and let’s be serious you know what was meant). And if it makes you sleep better, whatever, you win. Your a DOT genius.

As to the windshield question. I have gotten multiple tickets for it, in my younger years when I would muck around in my shitty jeep wrangler. But im not really that invested to go digging through all the intracacies of DOT, nhtsa and state laws on the matter. Because I don’t really care.

Have a good day