Except when a driver has a delivery or pickup in a state which doesn't recognize the drivers LTCH. For instance if the driver had a pickup/delivery in NY, he would he would not be protected under the interstate transport law. Because that is his destination and he is not just passing through. And that possibly includes even stopping for a rest period.
The peacable journey law it self covers that and again wih the last sentence it would violate the law of the state in witch he is passing wether passing or stopping.......