Fatal accidents see 'dramatic' spike after 4/20 celebrations, UBC analysis finds

The risk of a fatal accident among young drivers spikes by 38 per cent in the hours after 4/20 celebrations, according to new research from UBC and the University of Toronto.
The finding suggests that mass marijuana celebrations may not be entirely without consequences.
John Staples, a professor of medicine and researcher at UBC’s Centre for Health Evaluation and Outcome Sciences, said people aged 20 and younger had a much higher risk of a fatal crash on April 20, from 4:20 p.m.