I also remember being told statistics when I did the MSF training course many years ago that a very high percentage of single vehicle motorcycle fatalities inv

I also remember being told statistics when I did the MSF training course many years ago that a very high percentage of single vehicle motorcycle fatalities involved substance use. It was really really high - 80+% or something. I rode motorcycle for 8 years as my only mode of transportation and can clearly remember how little alcohol or marijuana was needed to notice a significant performance degradation (much more noticeable effects from small amount of substance use than when driving a car).