Determining whether an individual is impaired by marijuana use is not as simple as testing for alcohol impairment.
WASHINGTON – Motorists are being convicted of driving under the influence of marijuana based on arbitrary state standards that have no connection to whether the driver was actually impaired, says a study by the nation’s largest auto club.
02:48 White House suggests US may act against recreational pot20
00:46 White House expects Justice crackdown on legalized marijuana21
16:26 Tommy Chong says 'stay high' amid potential pot crackdown9
06:36 EXCLUSIVE: Limo driver unharmed after metal poles fly off truck and impale his vehicle on Brooklyn-Queens Expressway3