Bonefish Blues
Banging donk
- Location
- 52 Festive Road
Just because detail.Speedos are required to over-read your speed - there's a maximum error specified.
They are not allowed to under-read at all.
So if your speedo is reading 70mph, you might only be doing 60 mph, but you won't be doing 71 or more. My car, at an indicated speed of 70 (on a digital display) is doing 65 according to a GPS.
On motorways, I set the cruise control to 69, but that's because I'm childish![]()
Your first statement is false. Speedos are allowed to be accurate.
Your second statement is correct. There's actually a maximum allowable over-read, but it's extraordinarily 'generous'
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