We not only use a GPS (Garmin NUVI) but also our MS Streets map/program on my laptop and the Rand McNally truckers edition.
We traveled for a year cross-country and found the use of all three was necessary at times. I tried to get a state map also, if given the opportunity, each time we crossed a state line as they have lots of info on them as well.
Jo
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2007 Keystone 291RLS
2003 Ford F250, 4x4, SB, CC
7.3L diesel, Banks Exhaust Brake
ISSPRO pillar gauges
Pullrite 15K sliding hitch
2-Honda Eu2000i's in toolbox
2012 Polaris 400
2012 Polaris 330