By Sarah Traynor – BNN – May 16 , 2017
The Canadian Drug Policy Coalition released a report giving a wide review of everything we know about what happens when someone uses cannabis and then drives. Based on their findings, here are answers to some of the questions you may have around cannabis use and driving.
1. How often do people drive after using marijuana?
It’s hard to get a definite number. Roadside-testing studies show that approximately four to six per cent of drivers have used cannabis and then drove within two hours. However, in the two studies noted in the review, up to 30 per cent of people refused to participate. This could have an impact of how accurate the findings are.
Population surveys show a much higher percentage of driving after cannabis use, with self-reported data showing approximately 20 per cent of cannabis users driving within two hours of consumption.
That said, in one study, 79 per cent of cannabis users said they have never driven within that two hour time frame, so the population who uses and drives may be relatively low.