| Re: Why can't car speedos be accurate? |
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Group: uk.transport · Group Profile
Author: BoltarBoltar Date: Sep 20, 2008 10:16
On 20 Sep, 13:19, %%ste...@ malloc.co.uk (Steve Firth) wrote: > GPS + the current speed sensor for when there's no satellite coverage
> (such as inside tunnels) would be enough. The speed sensor could be
> calibrated from the GPS when there is a signal. This is already used for
> some upmarket in-car GPS navigation systems.
GPS doesn't give an accurate speed on gradiants. If you're the amazing
engineer you make out you'll know why won't you.
B2003
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