suspension on dodge 3500 based class B campervan

Just go slow, the bumps are not good for the gas/water lines, and connections. It will also loosen screws that hold the cabinets, and electrical connections. Rough roads or not, I suggest tightening all the ground connections on the bus bar, and connections to the breakers at least once a year. I have seen melted wires, bus bars, and fried breakers from wires vibrating loose. One of the causes of fires in RV's.