Will Marijuana Breathalyzers Actually Work?
With a breathalyzer, it's pretty easy to measure how much alcohol a person has consumed in a day. This is not the case with marijuana.
According to a new op-ed, it's incredibly tricky to determine how much weed a person has consumed at any given time. It can be equally complex to figure out at what point a stoner has consumed so much that he's impaired to drive.
With Canada legalizing weed and the United States looking like it's going to follow suit, activists are increasingly calling for the introduction of roadside tests that would be similar to those of alcohol Breathalyzers in order to measure if someone is too impaired to drive. They are also calling on authorities to set up a legal marijuana limit, similar to that of alcohol.
However, according to a paper that was...