The number of New York drivers arrested for drug-impaired driving is on the rise, but prosecutors say a flaw in the law is making it hard to prosecute many of the offenders.
According to the Institute for Traffic Safety Management, from 2007 to 2011, drugged driving arrests went up nearly 20 percent in the state, from 3,310 to 3,970, while drunk driving arrests went down 15 percent, from 45,829 to 39,164.