Originally Posted by Mr_D
That's why you should know your height and watch the road signs.
Couldn't agree more, at least have a backup plan. Here's a little story...
I had been using a GPS almost since they came out in my boat. Got one 6 years ago for my motorcycle as we did a lot of touring. 2 years ago I was picked to lead 6 couples on 12 bikes from Michigan to Glacier NP, Yellowstone, Grand Tetons, Beartooth Pass, down over the Big Horns to the Black Hills. With plenty of side trips.
Took days programming the GPS for all this and never packed a map. You guessed it, the GPS took a dump about 200 miles from Glacier NP. I was like a fish out of water! Technology is a great thing, but you better have a backup when it fails.
Side Note: Garmin sent me a rebuilt GPS and was there when I got home. Cost was $100. Original cost: $600.