I have a Garmin for Over The Road Trucks. Can't remember the model right now. I program it to my weights and measurements, then tell it where I want to go. I used it in my daughters car one day and forgot to take it out of truck mode and it yelled at me gave me all kinds of warnings about the low over pass ahead. We cleared it since we were in her car, but would have been bad if I had the TT behind me.
2008 Jay Flight G2 29BHS
2013 Chevrolet Silverado 1500 LT Z71 4x4