I was given a breathalyzer test at a road block after admiting I had two bottles of beer with dinner about an hour before. The test came back with a blood alcohol level of 0.02 which is well below the legal impairment level. The officer asked me to sign a statement confirming the reading and the amount I had consumed, so that in the event that the calibration was disputed by someone they could call on me to testify in court. I agreed and was the 7th or 8th person on their list that had signed with results.