RV GPS

wny_pat wrote:
You did not go far enough. You need to check the Map Overlay files at Discovery Owners Map Overlay Files. But they are just like the GPSs that have that info and start out with low clearances of 12' 4" on the federal truck routes only that use to be listed on the American Trucking Assn web page.

And as a retired commercial driver, I learned to read those Low Clearance Warning Signs way back in 1970 which I got my first NYS Class 1 license (tractor trailer), long before the CDL requirements. And there are well marked warning signs before you get to the low clearances and again on the low clearance. I find it very curious why drivers actually hit them considering how well marked they are! And they are usually very easy find a alternate route around without a GPS.

Dedicated RV GPSs are only as good as the information the is inputted to their programming. And we all know that much of that information can get one into all kinds of trouble because we have come to expect our computers to be perfect. Well, the computers may well be, but the in-putters are not!

If those work the same way as the Low Clearances POI file on regular GPSs, they can and do "warn", but do not effect routing.

I have the Low Clearances POI loaded in my "regular" GPS, the problem with that method is, it doesn't "reroute" you around a low overpass, but rather warns you when you get "close" (I have mine set for 1/4 mile). The warning also would say warn you that there is a low overpass "close", but it's not "on" the road you are on, but on one of the nearby roads, or even on a road that goes under the road you are on.

That would be the advantage of the actual dedicated RV/Trucker GPS units