All ActivityMost RecentMost LikesSolutionsRe: World's largest yard sale Aug 7-10My husband and I have gone on the Longest Yard Sale for years. Throughout the state of TN, the traffic is bumper-to-bumper, and if you can manage to get up to 20 mph, you are doing well. Trying to maneuver an RV along Hwy 127 here is a nightmare. Best to leave a day early and look for a place to park it. Perhaps your first year you would want to leave the RV at home (horrible thought I know). Some homeowners along the route rent out yard space to RVers. Just remember - no electricity = no A/C on the hot, humid nights that follow even hotter days. South of Crossville is Signal Mountain - great shopping.