You cite statistics on the rise in "pot-related traffic deaths" in Washington and Colorado, statistics that come from studies that measure THC in the system of fatality-involved drivers. The presence of THC might simply indicate that the person has used marijuana within the last several days and may not have been THC intoxicated at the time of the accident. You make no note of the study cited in the Journal of Law and Economics concluding that, "legalization is associated with an 8%-11% decrease in traffic fatalities," nor the National Highway Traffic Safety Administration study showing no statistically significant increase in THC-related deaths once the researchers accounted for co-variables.

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