Ok, so from what I understand, there are a bunch of run offs, that lead down to the Salten Sea. If the trail gets too heavy, and you want to bail, you have the option of using one of the run offs. I wouldn't be surprised if I use one of them myself
However, once you use a run off, your run is done, because they lead down to the highway.
This information that I've received from members that have been to Truck Haven. Please feel free to add your two cents.