Which is more accurate, Satnav or Speedo?

Your speedo is allowed by law to over-read by 10% but never under-read. So the manufacturers tend to make them over-read.

Your satnav is probably more likely to show closer to your real speed.

Neither is likely to be 100% accurate, although the Satnav should be much more accurate most of the time – particularly on level ground.
 

Posted under Speeding, Vans

Posted by Alec at 9:20 am, June 6, 2008

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