GPS and travel along East Coast

Along the east coast corridor verify any GPS with careful study of the actual paper maps, so that closed lanes (accident or construction) bad traffic etc will not sting as much, you can route around on the fly. Also helps to avoid off ramps into surface streets. I will run two or three gps at once and use the majority opinion in case of disagreement, but all of this presumes I have prepared by understanding where I want to get and the possible alternatives. Often we will shift driver so DW has the wheel and I have the map since I am better at nav than she is and we are equally comfortable in traffic at the wheel. I do not ever trust any gps altogether!! Their algorithms can mess up and their data can be wrong.