Trucker Path imports Google maps live traffic but adds truck stops, weigh stations, walmarts, rest areas, etc.
I forgot Waze. Waze traffic and detours are pretty good but I still find Google Maps better, probably just because so many people are using it. The day Google offers Maps with traffic and routing for big trucks I'll be the first in line. I honestly don't know why they haven't. The technology is there and most of us would be willing to pay for it.
Since Google bought Waze they have been changing both Waze and Maps, integrating the best of both platforms. Time will come there will be no difference.