> Just got back from a little trip in the car. It has speed limit sign recognition built-in. Most of the time, it works pretty well. But today it was going crazy. Missing some signs. Telling me I am over-limit when I go from a 20 zone to a 30 zone and was doing under 20 ? though it did ?see? the sign correctly! Not changing from indicating over-limit even when I dropped speed even further. (At no point was I actually over-limit - according to speedo and me!)
> >
> > A few miles down the road, back to working entirely properly. > >
> > Now I could take all sorts of wild guesses as to the cause, and usually I would. The thing is, it misbehaved in exactly the same way, on the same bit of road, a week or two ago. Not just a straight road but a very windy route that varies from 60 through 30 and 20 several times, back up to 60, then 40 and finally 60 again. At no point in-between has it appeared to misbehave at all. On both occasions I had driver well over 20 miles before getting to this location ? and about 20 miles after ? and worked perfectly.
> >
> > While these devices are merely assistants to the driver, it is no big deal. If they start to actually control speed, this could be quite an issue.
> >
> > Any ideas what could be causing these issues?
> >
> It's a computer ...
>
There is that, of course. :-)