Go Pro Professional 620 speed calculation

GeorgeDawes_2021
GeorgeDawes_2021 Registered Users Posts: 1
New Seeker
edited December 2021 in Devices using Wi-Fi®
Hi,
When driving my truck at 56mph my satnav says I am travelling at 52mph, and when I drive my car at 70mph my satnav says I am travelling at 65mph, is there a technical issue with this satnav?

Thanks in anticipation.

George Dawes

Best Answer

  • kieron
    kieron Posts: 539
     Superuser
    edited June 2021 Answer ✓
    Hi there @GeorgeDawes_2021 -

    Vehicle speedometers are designed to show a slightly higher reading as to try to keep you legally under the required speed limit - your satnav is showing your true speed.

    Its always best to monitor your vehicle speedometer though! ;)

Answers

  • kieron
    kieron Posts: 539
     Superuser
    edited June 2021 Answer ✓
    Hi there @GeorgeDawes_2021 -

    Vehicle speedometers are designed to show a slightly higher reading as to try to keep you legally under the required speed limit - your satnav is showing your true speed.

    Its always best to monitor your vehicle speedometer though! ;)
  • YamFazMan
    YamFazMan Posts: 20,828
     Superuser
    Hi
    @GeorgeDawes_2021
    Welcome to the site....
    See... Wikipedia 'Speedometer'
    Here... https://en.wikipedia.org/wiki/Speedometer
    See UK Speedometer Specifications....

    Stay Safe... ATB YFM