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Full_Temperature_920 t1_j1ep0z7 wrote

Reply to comment by JackieMcFucknuckles in Speedometer of a newer Mustang reads "Ground Speed" by egordoniv

Didn't even know GPS speed was a thing

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A_Tad_Bit_Nefarious t1_j1g5vgl wrote

If you use navigation apps like Waze, Google Maps, or a dedicated unit like a Garmin, they typically have an option to tell you your speed. Sometimes they tell you the speed limit of the road you are on too so you can easily tell by how many mph you are breaking the law lol.

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NemosGhost t1_j1g8g9s wrote

It is and it isn't.

GPS can measure speed/velocity and display it different references or units. It's a tool to measure, not the unit or datum itself.

Saying GPS speed is kinda like saying ruler length.

We do often say it out of habit though to compare it to air speed or boat speed which are the speed of the vessel moving through air or water that is also moving.

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