...which is why I like Google Maps (run from a smartphone) so much better now, with the automatic re-routing and other suggestions it makes based on traffic conditions, road construction slowdowns, etc. But even that technology isn't foolproof. Recently on a non-RV trip from IL up to WI, Google repeatedly informed us that a major interstate highway was closed due to construction. I saw lots of construction indicators but never any signs or detours regarding a complete closure of the interstate. We took a 10-15 mile "side roads" detour suggested by Google (along with a convoy of other cars that were undoubtedly using the same technology) and got back on the interstate. On the way home we decided to ignore Google and stayed on the interstate... some reduced lanes, etc. but no closures. I can't figure out where it got that faulty data.