mikestock wrote:
I have two Garmin units. I also have Streets and Trips 2011 with GPS sensor. Besides this I have an Ipad with GPS and also apps on mine and my wife's Verizon smart phones. None of the above, with the exception of Streets and Trips, have any warning about overhead clearance.
After three years of comparing routes calculated by the different devices I have learned to rely most on the routes calculated by Verizon. It does not always give the shortest route, but when I have depended on Garmin rather than a different route calculated by Verizon, it was a mistake. The Garmin has put me on mountainous routes such as one just north of Santa Rosa, CA that limit speed to 25 mph for miles, when the alternate Verizon calculated route, although longer, would have been much safer and faster. The only drawback with the phone is that it must have a signal to calculate.
Which Garmin units do you have, the was under the impression that the Garmin RV670 did do height?
"Alerts you to upcoming road conditions
Such as sharp curves, bridge heights, weight limits, high-wind areas, descents, ascents and more to help keep you informed. Also shows trucking speed limits and mile marker information."
I have also read in PC reviews that Garmin shows ads?