The ignition interlock device for drunk drivers The ignition interlock device is a high-tech system that detects the BAC (alcohol content in the blood) of the person to see if the individual has been drinking. The device works like a normal breathalyzer. The device is mounted on the dashboard and to start the car the individual must blow into the car. The car then evaluates the person's BAC and if that person shows no signs of alcohol use the car starts. If the results say he consumed alcohol, the vehicle will not start. When the vehicle starts and has been running for about an hour, the person must blow into the car again to assess its condition once again. The maximum loud limit is 0.04 mg of alcohol per 100 ml of blood. Each time the individual uses the system and the small computer records the information. The system itself costs around 135.00 with a maintenance fee of around 100.00 per month. The hypotheses for this program are: Is the ignition interlock program effective in reducing impaired driving recidivism? Does it impact drivers with more severe and persistent impairments? Finally, does the program continue to be effective even after the interlock device is removed? (Weinrath) Random sampling of Canadian drivers who had their licenses suspended between 1989 and 1994 performed the IIP (Ignition Interlock Program). The sample consisted of 994 offenders aged 20 years or older. 125 of them were women, 701 men and 189 cases of ignition interlock. The breakdown was 168 IIP cases and 826 DUI offenders for the comparison group. These tests were performed in Canada and others in the states of Ohio, California and Oregon. The problems for those tests were the inaccurate data received from the tests. In Ohio and California no control group was used and the data fails to provide the correct information. The control group was used in Oregon with two parties, one group was created using reinstated drivers who had never had the program. Using Offenders Who Used the IIP Due to the short duration of the experiment, it was difficult to obtain long-term data from the study created by the other group. Referring to samples taken in Canada. 87% of them were men in their thirties who were working (75%). 43% of them were married and in a normal relationship. 57% of them were single, divorced or widowed.