I usually run two GPS apps one being the dash Rand McNally which displays
All the info regarding specific info you entered regarding your RV
Also
Mile Markers
Turn lanes well in advance
Construction if updated
Real time accidents and lane closures
With 43 foot long and typically towing my F150 getting in the proper lane is a good thing Head of time
Driving secondary roads the POI are always handy and alternative routes or exits can save aggravating moments and money
It is a tool and I do have a large atlas for an overview
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