My Garmin system does this too and it is handy, though I worry how accurate and timely the updates are. Since more often than not the reason for the fluctuations is to generate revenue, I suspect the local authorities are going to withhold that information from the nav companies.
the worst for me is when I'm on a side road that I'm not familiar with, with few other cars to use to keep pace and find a cop right behind me. And my mind gets caught in a loop of "is it 45 or 55, 45 or 55, 45 or 55?"
I find quite a few roads that have different posted limit than what my nav displays...and yes, in many cases, those roads have had that speed limit for many years and it's not just a matter of the nav needing an update. And it goes both ways...sometimes the actual limit is higher than what the nav is telling me and sometimes it's lower. I would not count on it absolutely.
I have seen reports that some European countries are considering using similar technology to prevent people from speeding (in other words, your car simply will not go over 65 in a 65 zone). It sounds like a safety engineer's dream, but it sure could make driving even more boring.
They change the speed limits on some of the roads here in Vegas more often than I eat out. Then there are roads that if you go by the last posted speed limit, have different limits depending on which way you are going. Frankly, they could not get road signage right in this city if the life of their firstborn depended on it. Then there is NDOT, "Bringing you repeated abject failure instead of infrastructure".
The TomTom's speed estimate has never once matched the speedometer on my 2013 CX-5. I brought it up when it was in for service, and was told the speedometer was accurate and to ignore the gps. A week later, I got my first speeding ticket in 7 years. http://www.cxfail.com/2012/09/speeding-ticket.html
Comments