We are new members and recently ordered the 10th Edition Road Atlas, which is a great product! We were wondering about how to use the information about the campgrounds for Big Rigs, which are labeled B on the maps. We found the information about the FMCA campgrounds, but we also need more information about campgrounds which are big rig friendly. Is there a listing or directory of those labeled B? Maybe we missed it. Thank you for your help!