What do most veteran RV'ers use for navigation? Because I have heard of issues with the Garmin style dashboard navigation devices I am downloading trucker apps to my phone and having some luck. But...
I just use the Google Maps app on my cell phone. I always look at each turn photo to see if there are any impediments. Also, the Park Advisor app shows low bridges so I avoid those routes. I go to great extremes to avoid metro areas for safety and routing issues.