Grim is a good way to describe what you will find when you search "Car seat in an RV"...just people telling you why you shouldn't/can't. We have traveled thousands of miles with our 2yo in a car seat on the couch. We haven't had an accident so can't speak to the safety of that set up in an accident. I do tend to travel slower (and when we are going up a mountain pass MUCH slower) than I would in another vehicle so, by my estimation, that makes it about even. Like others have said, you have to decide what your risk tolerance is and make the right decision for you. You can stay at home and keep your child very safe until they fall down the stairs, grab a knife, etc. May as well see the world while managing the risk to the best of your ability given your situation. Strap them in tight to a car seat in the best location you can find. Think about what will fly forward in the event of an accident and plan around that as best as you can and get busy traveling.