Should have also mentioned that I also have "Allstays" on my phone which has a number of terrific features including bridge heights along the route. While this one costs $10, it's been well worth it. I have also used it to spot potential campgrounds along my route. It shows service providers, Walmarts that allow overnight parking, propane, state/county/city parks, rest stops and more. Their database is pretty extensive.
www.allstays.com
I have my iPhone mounted on the dash wich I find much safer than looking down at the Precept radio/GPS.
Between Waze and AllStays, I have been very satisfied with my routing/GPS capabilities. (Both of these are also on the DW's iPad in navigator seat)