jplante4 wrote:
Most of us do not trust a single source of navigational information anyway, so I suggest any GPS or even the CoPilot app on a tablet and a truckers' (paper) road atlas. I also have Next Exit, which is a book of exactly that; what's at the next exit.
The CoPilot app does allow you to enter vehicle type and height.
This is exactly what I use as well. Can't trust any one app or GPS but so far the co-pilot app has been the best I have used and you can drag to modify the route. If you stay on roads that the trucker's atlas says are truck routes (orange) you'll be fine. Next Exit is a handy resource too.