Breathalyzers Are Not Perfect
Philadelphia, Pennsylvania police file between 8,000 and 10,000 drunk driving (DUI) cases each year. A large number of those charges rely on breathalyzers, electronic devices that gauge whether a person’s blood-alcohol content is above the 0.08 legal limit. The test results, combined with the arresting officer’s observations of signs of alcohol impairment, are used in criminal prosecutions. Because of its…

