Then there is the safety of your beloved child to consider, whether the law has any special requirements or not. I would not have removed my child from a secured car seat under any circumstances in any moving vehicle, no matter the description. How hard is it to pull over and deal with baby. Not very. The few times I have tried to move in our coach, it was clear that it would not take much to lose control, especially when your hands are not free to protect yourself. We sailed offshore for years and our yacht had grab rails everywhere, securely attached and convenient to use. No motorhome design I've ever seen has taken into consideration safety of a moving passenger. We had regular chairs at our table -- not good. The kitchen counter, maybe, but otherwise you and your baby are missiles ready to be launched with no notice. If you chose to take that chance because you thought you were safe, then you would never forgive yourself if a slight lurch or bump of the coach caused your child injury.