Been through several times with gasser Class A and toad. Just ride with the trucks, respect their size and load, and you will be fine. Last time through, a couple of idiots in four-wheelers tried to kill me and DW by cutting in front or us at an entrance ramp, then stopping instead of accelerating. The professional driver with a 53' loaded trailer behind us saved our lives by following the spacing rules, and being aware of what was happening at the entrance ramp in front of him.