The science of using a laser to detect a driver operating a moving vehicle under the influence of alcohol has become a reality.
Based on earlier research, Scientists at the Institute of Optoelectronics at the Military University of Technology conceived and developed an experimental laser device capable of detecting alcohol vapor within a moving car. The device works by determining subtle changes in the laser as the beam passes through the alcohol vapor. According to test results, the device successfully detected a simulation of the amount of alcohol exhaled by a person with a concentration of alcohol in their blood of at least 0.1 percent inside of a moving vehicle.
Furthermore, the scientists have considered within their design possible countermeasures which may be used to defeat the accurate measurement of alcohol in the air of the moving vehicle. Some countermeasures, such as using solar screens on the side windows and driving with windows open, did not affect the laser detection of the alcohol test results. The scientists expressed the importance of investigating all possible countermeasures during the next stages of the ongoing project.
The device is still in the experimental stage.