hilldweller
LIFE MEMBER
a few ramblings...
Speedometer speeds never seem to equate with GPS speeds.
That's right - the law says something like +10% -0%, the 0% is very important because the offence of speeding is absolute on any measurable speed in excess of the speed limit, so it makes sense for the makers to pitch the speed under.
Just about every one I've checked, sometimes using 2 GPSs at once you get 30 showing at about 27. 70 is usually indicated 76. GPSs never seem to disagree with one-another.
So all the do-gooders are holding us all up by sticking to indicated speed. Quite significantly on motorways.