Rest area overnight stops.

I had one trooper tell me how he looked at the whole situation. If you are truly stopping to REST, then he would never hassle you. In fact, he felt that he could be in a heap of trouble if he "forced" you to leave a rest area, after a certain amount of time, when you told him you were too tired to drive.
Now, if you are stopping to eat dinner and afterwards just sitting there with the slides out and watching TV, that could be a problem in some states.
As with many things, use a little common sense.