When they do this, I check for signs regarding overnight parking, safety, etc.,… and if it checks out, I save the place in my GPS for emergency parking.
You never know when you’re going to be in that area and having trouble finding parking.
I have a few secret parking places in areas with a lot of logistics and distribution centres but limited truck stop parking.
But keep these spots as closely guarded secrets. Once they become popular, you’ll find they’re taken or others will have left a mess and now parking is banned.