Further Laboratory Testing of In-Vehicle Alcohol Test Devices

摘要

The technical report presents the results of laboratory testing of three models of commercially available in-vehicle alcohol test (IVAT) devices. These devices are designed to prevent persons with alcohol on their breath above a preset threshold from starting and driving a car. The models tested were: The Autosense, tGuardian Interlock and the Safety Interlock devices. Features of these devices designed to make them more difficult to circumvent were also evaluated. In summary, even with special features designed to prevent circumvention, it can be concluded that a motivated individual, with preplanning and some knowledge, can fool the devices tested. However, it is inappropriate to generalize these results to all current or future units. Additionally, these data do not address how well these devices will perform under real-world field conditions.