Any of the cheap Garmin Nuvi units will allow you to route to a city and you may also turn off interstates which then puts you on the 2 lanes. I was born, raised and live in Nashville. You are in NO danger here...downtown is very safe based on police guarding the tourist areas...on the out skirts or city franklin south, mt juliet east, hendersonville north and bellevue west you also will be in NO danger. Nashville is basically 800,000 rednecks who love tourist based on the fact that you eliminate the need for a state income tax through tourist dollars. Come to Nashville and be loved.
Tennessee Traveler #41
Double Darkside #1164