[rollingdownthehighway]

I have the 770 and used it for the first time and if I didn't know the roads, it would've gotten me in some trouble. From low clearances to going on roads that I can't legally go on and can't go on even with my truck. I used Google Maps, and a truckers atlas as well. There's suppose to be an update for the 770 to fix the issue the last update broke that caused it, just haven't updated it yet. I would check, double check and triple check the route it gives you before rolling down the highway and you're on a parkway or a road, you can't be on.