On 11/03/2011 08:43 AM, scott wrote:
>> More precisely, it assumes that you're on the road it's telling you to
>> drive down, until you get X number of yards away from that road, at
>> which point the location indicator suddenly snaps to the road that
>> you're *actually* on.
>
> Indeed, whilst moving the accuracy is not good enough to determine
> whether you're on the motorway or on the slip-road 5 metres to the side
> of it

Which is what I said. GPS isn't very accurate.

> Once you're more than 10 metres or so away from the route it should snap
> instantly

I haven't measured whether it's 10 meters, but yeah, that's 
approximately what it does.

> BTW the ones built into the car are far superior

And outside of everybody's price range.

> If you've used one you'll never go back to the portable add-on ones.

Well, you will, because nobody has £80,000 for a car that has one. :-P

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