Originally Posted by
Lotz-A-Landies
Hi BigJon
I think my point isn't clear. For any speed indicated on your speedo IT CAN NOT BE MORE THAN THE ACTUAL SPEED ON THE ROAD irrespective of any speedo error.
The practice is that speedos are set to over-read by the maximum error. It is why most cars built since about 2000 are actually travelling about 5 to 6kph below the posted limit.
IMHO it is also why people believe that GPS are more accurate. Its not true, modern speedos are very accurate the problem is that manufacturers are required to artificially adjust the indicated speed by Government.