I never claimed that it did. Addendum: the margin of error on speed radar generally tends to be in the region of 2mph. You'll need to be a good deal slower tha

I never claimed that it did. Addendum: the margin of error on speed radar generally tends to be in the region of 2mph. You'll need to be a good deal slower than the speed limit before a police officer is likely to consider your driving to be an impairment.