[QUOTE=Gary RVRoamer;2522202]Get low clearance warning info for your GPS at Low Clearance GPS Data
Just be aware that the LowClearances.com software will give you a low-clearance warning ANYWHERE within the range you have set, even if it's on another road!
I tried it for a while on an earlier TomTom GPS and it will drive you nuts going through a large city!
That was several years ago, and it's possible they have changed it, but I would verify that before buying! JMHO