• @Crisps
    link
    101 year ago

    Because car speedometers are not calibrated by law, and can be off a few percent. Changes in temperature can change tire radius as well.

    After all that you then get into court proceeding of proving speed gun calibration has to be perfect.

    • lad
      link
      fedilink
      -11 year ago

      And again, you don’t need to go exactly at the [increased] limit, you can go below it and allow for speedometer being not exactly correct