We found this guide on our first trip in our "bus" to France excellent. BUT a word of caution, do not leave your brains in the back of your Motorhome, we found some of the GPS co-ordinants were incorrect, we like others were directed in one case down a virtual dead end road that got narrower ,and narrower with not place to turn around. On another occasion one Aire did not exist at all having been closed down, and the road designated as being prohibited for Motorhome access, but we still followed the GPS instructions rather stupidly and could have ended up with a large fine. So in short our advise is use the book to get near to the Aire, then use your eyes and common sense to look for the "Aire" or "camping car" signs and follow them in preference. Once we adapted our use of the book like this it was plain sailing, Enjoy.