As America blazes its path towards marijuana legalization, federal agencies and traffic safety experts are worried that the full ramifications of legalizing the once-illicit drug remain unknown. The latest smoke signal that states should study the matter further came out last week when the federal government reported a 6 percent increase in highway crashes across states that legalized the drug. The previous study, which focused on the first three states to legalize the drug for recreational purposes, found a 5.2 percent increase in highway crashes.
Unlike alcohol, where a breathalyzer can easily and objectively determine whether a person is too intoxicated to drive, the push for an objective sobriety measurement for cannabis remains elusive. Currently, the police are able to perform a blood test and locate THC in the blood of the driver, however, because THC can stay in a person’s system for days or even weeks, the test lacks the ability to measure whether the driver was intoxicated while behind the wheel.