[Bill.vannuys]

I use the Rand McNally RVND 7720 that allows me to enter my Unit height, width, propane capacity, etc. and "allegedly" puts me on a good route. I trust it sometimes, but other times not at all so far as road choices and clearances. It has given me reason not to trust it. It does have nice features like the campground directory and I can actually display the weather as an overlay.

So, I usually enter my trips into an online travel planning tool that provides warnings of tunnels, bridges, etc. with low clearances to double check my GPS and make any route adjustments.

I still never fully trust the tools, and my wife helps me watch all upcoming clearances when not on the interstates. I have trouble believing the clearance signs sometimes...what if they just paved the road and forgot to change the clearance sign?