>Whereas a blood alcohol concentration of 0.08% (the legal limit in most states) might result in a concentration of 208 ppm of ethanol in the breath, a similarly impairing dose of cannabis results in 0.00001 ppm of the drug in breath.

Hi, I'm just curious if you have any reference to help elaborate on the similarities of imparment as it relates to negative impact on a persons abilities (especially those known to have significant impact driving preformance)?

Is there any studied or understood similarity between the level of driving imparment when breath samples measure 208 ppm ethanol vs 0.00001 ppm cannabinoids (you may have mean just THC here but it's not clear to me)?

If there is a similar increase in the likelyhood of a fatal accident when breath measures 208 ppm ethanol vs 0.00001 ppm of the devil's lettuce I'll eat my shoe!

I don't mean to dismiss any potential impact of cannabis consumption on the likelyhood of fatal accidents or injuries but I do believe the impact is often greatly misrepresented when compared to alcohol consumption.